What information does this passage from "Sorry, Wrong Number" mainly convey?

FIRST MAN: Make it quick. As little blood as possible. Our client does not wish to make
her suffer long.
―-
GEORGE: A knife okay, sir?
FIRST MAN: Yes. A knife will be okay. And remember-remove the rings and bracelets,
and the jewelry in the bureau drawer. Our client wishes it to look like a simple robbery.
(A) It shows George to be reluctant.
(B) It reveals that Mr. Stevenson will be murdered.
(C) It confirms that two men are plotting to murder a woman.
(D) The First Man wants a gun to be used.

(C) It confirms that two men are plotting to murder a woman.

The correct answer is (C) It confirms that two men are plotting to murder a woman.