请教OG78

A group of children of various ages was read stories in which people caused harm, some of those people doing so intentionally, and some accidentally. When asked about appropriate punishments for those who had caused harm, the younger children, unlike the older ones, assigned punishments that did not vary according to whether the harm was done intentionally or accidentally. Younger children, then, do not regard people’s intentions as relevant to punishment.

Which of the following, if true, would most seriously weaken the conclusion above?

(A) In interpreting these stories, the listeners had to draw on a relatively mature sense of human psychology in order to tell whether harm was produced intentionally or accidentally.

(B) In these stories, the severity of the harm produced was clearly stated.

(C) Younger children are as likely to produce harm unintentionally as are older children.

(D) The older children assigned punishment in a way that closely resembled the way adults had assigned punishment in a similar experiment.

(E) The younger children assigned punishments that varied according to the severity of the harm done by the agents in the stories.

哪位NN解释一下为什么选A哩~~~~

不是nn,也想说说，

此题是说不同年龄的孩子读人做坏事的故事，这些做坏事的人中有的是有意的有的是无意的。当被问即该如何惩罚这些作坏事的人时，年龄小的孩子并不象大孩子，他们没有根据是否有意无意来分别处罚，所以得到结论，年龄小的孩子认为处罚与做事的意图无关。

显然这个结论有个前提:年龄小的孩子能辨别人做事是有意还是无意。a正是否了这个前提，所以weaken