for every positive even integer n, the function h(n) is defined to be the product of all the even integer 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 答案是E, 乱猜猜对的