Can someone explain a writing question

Alluring
Sat, 30 Jul 2011 16:22:23 +0000

The same analysts who once favored public-opinion polls now see them as hampering representative government.

(A) The same analysts who once favored public-opinion polls now see them
(B) The same analysts which were once in favor of public-opinion polls now have come to see them
(C) Public-opinion polls, once favored by analysts, but now see by these same analysts
(D) As for favoring public-opinion polls, the same analysts now see them
(E) Analysts once were in favor of public opinion polls, which these same analysts now see

Can someone please explain to me why the answer is A and not E? I thought that ‘them’ was ambiguous and can refer to either the analysts or the public-opinion polls. I eliminated B, C, and D, and was left with A and E.