Why Did the Leaders of Jewish-American Organizations Not Organize Large

Why did the leaders of Jewish-American organizations not organize large nationwide protests in the US to alert the nation to the death camps in Germany?

A) They did not know about it until the end of the war.
B) They did not want the war efforts diverted from Germany's defeat on the West front.
C) They feared a backlash if they spoke out to forcefully on behalf of European Jews.
D) They played such a powerful role in American government that they did not need public support.