Which tree diagram shows the possible outcomes of choosing either black or gray shorts and a blue, green, white, or red T-shirt?

A. shorts and T-shirt tree diagramThree headings are written across the top of the image: Shorts, T-shirt, and Outcome. The word Black is underneath the Shorts heading. The words Blue, Green, White, and Red are written stacked vertically under the T-shirt heading. Lines are drawn from the word Black under the Shorts heading to each of the colors listed under the T-shirt heading. Single lines are drawn horizontally from each word under the T-shirt heading to a pair of words under the Outcome heading. The pairs of words, from top to bottom, under the Outcome heading are as follows:
Black, Blue
Black, Green
Black, White
Black, Red
B. shorts and T-shirt tree diagramThree headings are written across the top of the image: Shorts, T-shirt, and Outcome. The words Black and Gray are written stacked vertically underneath the Shorts heading. The words Blue, Green, White, Red, Blue, Green, White, and Red are written stacked vertically under the T-shirt heading. Lines are drawn from the word Black under the Shorts heading to each of the first four colors (Blue, Green, White, and Red) listed under the T-shirt heading. Lines are drawn from the word Gray under the Shorts heading to each of the second four colors (Blue, Green, White, and Red) listed under the T-shirt heading. Single lines are drawn horizontally from each word under the T-shirt heading to a pair of words under the Outcome heading. The pairs of words written under the Outcome heading are as follows:
Black, Blue
Black, Green
Black, White
Black, Red
Gray, Blue
Gray, Green
Gray, White
Gray, Red
C. shorts and T-shirt tree diagramThree headings are written across the top of the image: Shorts, T-shirt, and Outcome. The words Black, Gray, and Blue are written stacked vertically underneath the Shorts heading. The words Green, White, Red, Green, White, Red, Green, White, and Red are written stacked vertically under the T-shirt heading. Lines are drawn from the word Black under the Shorts heading to each of the first three colors (Green, White, and Red) listed under the T-shirt heading. Lines are drawn from the word Gray under the Shorts heading to each of the second three colors (Blue, Green, White, and Red) listed under the T-shirt heading. Lines are drawn from the word Blue under the Shorts heading to each of the third three colors (Green, White, and Red) listed under the T-shirt heading. Single lines are drawn horizontally from each word under the T-shirt heading to a pair of words under the Outcome heading. The pairs of words written under the Outcome heading are as follows:
Black, Green
Black, White
Black, Red
Gray, Green
Gray, White
Gray, Red
Blue, Green
Blue, White
Blue, Red
D. shorts and T-shirt tree diagram

The tree diagram is not given.

C. shorts and T-shirt tree diagram