The edge of a cube is 5a cm. Find its surface?	Choose the correct choice from the following answers
A) 150 a 2 cm 2
B) 170 a 2 cm 2
C) 125 a 2 cm 2
D) 175 a 2 cm 2
E) 120 a 2 cm 2

Rationale: "6 a 2 = 6 * 5 a * 5 a = 150 a 2 answer : a"
Answer: A