Question

Help?

Answer 1

http://gyazo.com/fad56d17d839dc7ac38057b0c8f63e58

Answer 2

The prime factorization has to consist of only prime numbers. Recall that a prime number has no factors besides itself and 1. Go through each answer and see if there are any numbers that aren't prime. For example, option A has 35, which can't be prime because it is a multiple of 5.

One you eliminate the answers that aren't all prime, see which one equals 560.