What Was the End Result of the 1936 Literary Digest

What was the end result of the 1936 Literary Digest presidential election poll?

A) Franklin Roosevelt won, and the Literary Digest attained greater credibility.
B) Alf Landon lost, and the Literary Digest went out of business.
C) The Literary Digest became the most important periodical in America.
D) The Literary Digest set new standards for scientific polling.
E) There was little change in political polling methods.