Idioms

Pick out the meaning of the underlined idiom in the following sentence.
At last, the truth has come out.

Match the idioms in List I with the meanings in List II:

List I		List II
(A)	Pour oil on troubled waters	(I)	not to commit oneself
(B)	Rule the roast	(II)	to find fault with
(C)	Sit on the fence	(III)	to pacify the matters
(D)	Pick holes	(IV)	To dominate

Choose the correct answer from the options given below:

What does the phrase "taken with a pinch of salt" mean?