1.        By a vote of 9 to 0, the Supreme Court awarded the Central Intelligence Agency broad discretionary powers enabling it to withhold from the public the identities of its sources of intelligence information.

(A) enabling it to withhold from the public

(B) for it to withhold from the public

(C) for withholding disclosure to the public of

(D) that enable them to withhold from public disclosure

(E) that they can withhold public disclosure of

答案A没什么问题，it指代Central Intelligence Agency 就排除了CDE，enabling it to withhold from the public修饰powers，B也不能选了。但是还是没看懂原题：the identities of its sources of intelligence information是做什么成份的？

谢谢各位！！