题目内容：

If f is the function defined for all k by f(k) = k^5/16,what is f(2k) in terms of f(k)?
A.1/8 f(k)
B.5/8 f(k)
C.2 f(k)
D.10 f(k)
E.32 f(k)
标答是D,但我怎么求都是E
另外一道,If an integer n is to be chosen at random from the integers 1 to 96,inclusive,what is the probability that n(n + 1)(n + 2) will be divisible by
A.1/4
B.3/8
C.1/2
D.5/8
E.3/4
标答是D,我可以求出3/8,但是这样就不包含2、4等正解,所以求正确的解法有木有啊!