The area of sector of a circle whose radius is 12 metro and whose angle at the center is 40° is?  Choose the correct choice from the following choices:
A) 53 m 2
B) 51 m 2
C) 50.2 m 2
D) 45 m 2
E) 40 m 2

Rationale: "40 / 360 * 22 / 7 * 12 * 12 = 50.2 m 2 answer : c"
Answer: C