请教大全—1—6

大全-1-6.
                Ross: The profitability of Company X, restored to private ownership five years ago, is clear evidence that businesses will always fare better under private than under public ownership.

Julia: Wrong. A close look at the records shows that X has been profitable since the appointment of a first-class manager, which happened while X was still in the pubic sector.

Which of the following best describes the weak point in Ross’s claim on which Julia’s response focuses?

(A) The evidence Ross cites comes from only a single observed case, that of Company X.

(B) The profitability of Company X might be only temporary.

(C) Ross’s statement leaves open the possibility that the cause he cites came after the effect he attributes to it.

(D) No mention is made of companies that are partly government owned and partly privately owned.

(E) No exact figures are given for the current profits of Company X.

这题答案为什么是C啊？讨论链接里没看到这题，请NN们可否帮忙解释一下，谢谢^_^

R：盈利率恢复了说明X公司还在在私人的手里比在公家的手里管理的更加好

J：不对。自从任命第一任经理开始，那时X还是公家产业，X公司就一直profitable

这里有个变态结果：效果和原因的关系

R想说：The profitability of Company X的restored证明了businesses will always fare better under private than under public ownership

但是有个错觉，似乎是ownership导致了 profitability 的restored

J正式给予上述这点进行了反驳

谢谢指点^_^
    

另外请问：

“(C) Ross’s statement leaves open the possibility that the cause he cites came after the effect he attributes to it. ”
    

这句话怎么翻译？leave 和 open怎么同时出现？
    

谢谢