What is the prime factorization of 1,260?

A. 2 * 2 * 3 * 3 * 5 * 7

B. 4 * 5 * 7 * 9

C. 2 * 3 * 5 * 6 * 7

D. 2 * 3 * 5 * 7

A. 2*2*3*3*5*7

Whilst B and C both also yield 1,260, they aren't broken down in to their prime factors. In B, 4 can be broken down in to 2*2 and 9 in to 3*3, and in C, 6 can be broken down in to 2*3

And D just doesn't total 1,260