请教一道prep题。。关于质因子的

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 factorof h(100)+1, the p is

A. between 2 and 10

B. between 10 and 20

C. between 20 and 30

D. between 20 to 40

E. greater than 40

请nn们不吝赐教。。。多谢

就算看了解释，还是没看明白，P是H(100)+1最小的质因子，

楼上的。

这里有一个性质。

任何两个连续整数是互质的。