一道简单的概率题。。。可是我不会做。。。。

What is the probability that event E or event F or both will occur?

(1)     The probability that event E will occur is 0.6.

(2)     The probability that event F will occur is 0.4.

A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

D. EACH statement ALONE is sufficient.

E. Statements (1) and (2) TOGETHER are NOT sufficien

答案是E。。。 我选C。。。
可以说为什么C不行吗。。。。

P（E） + P（F） = 1。。。。呀。。。

两者可能不独立

互斥事件一定是同一事件。

两者可能没有任何联系。也可能不是全集