AMC8 2020 Problem 12

For a positive integer n, the factorial notation n! represents the product of the integers from n to 1. For example:

6! = 6 \times 5 \times 4 \times 3 \times 2 \times 1

What value of N satisfies the following equation?

5! \times 9! = 12 \times N!

Answer Choices
A. 10
B. 11
C. 12
D. 13
E. 14