prep ps1-7求助，请nn帮忙看看

For every positive even integer n, the function h(n) is defined to be the product of all the even integers from 2 to n, inclusive.  If p is the smallest prime factor of h(100) + 1, then p is

(A) between 2 and 10

(B) between 10 and 20

(C) between 20 and 30

(D) between 30 and 40

(E) greater than 40

这个题怎么算阿，非常感谢了

路过的帮忙解答下啦

谢谢