请教，PREP数学题目

jessie10

193.20944-!-item-!-187;#058&013354

A basket contains 5 apples, of which 1 is spoiled and the rest are good.If Henry is to select 2 apples from the basket simultaneously and at random, what is the probability that the 2 apples selected will include the spoiled apple?



(A)1/5

(B)3/10

(C)2/5

(D)1/2

(E)3/5

为什么选C呀？ 我觉得是A？  

flyingbunny

C(4,1)/C(5,2)=2/5