What is the prime factorization of 12?

A.2^2*3
B.2^3*3
C.3*4^2
D.2*3*4

A.2^2*3 = 4 * 3

B.2^3*3 = 8 * 3
C.3*4^2 = 3 * 16
D.2*3*4 = 6 * 4