For this chain-of-thought reasoning and answer, what was the question?
6a2 = 6 * 2a * 2a = 24a2
 A: (D)
Q: The edge of a cube is 2a cm. Find its surface?
Options:
(A) 24a8
(B) 24a4
(C) 24a1
(D) 24a2
(E) 24a7