The base of a prism is a rectangle. The length of the rectangle is 4 7/8 inches, and the width of the rectangle is 5 inches. The height of the prism is 12 1/2 inches. Which calculation gives the volume of the prism?

A. 4 7/8 + 5 + 12 1/2

B. 4 7/8 x 5 x 12 1/2

C. ( 2 x 4 7/8) + (2 x 5) + (2 x 12 1/2)

D. ( 2 x 4 7/8 x 5) + (2 x 5 x 12 1/2) + (2 x 47/8 x 12 1/2)