How Did Henry Wallace Alter Truman's Actions Concerning African Americans

How did Henry Wallace alter Truman's actions concerning African Americans during the election of 1948?

A) Wallace caused Truman to adopt more policies favoring African Americans, to keep their votes.
B) Since Wallace was the leader of the Dixiecrat Party, Truman explicitly went against him in advocating black rights.
C) Wallace was a black communist leader of the NAACP, and caused Truman to crack down on that organization during the 1950s.
D) .Wallace really had no effect on Truman, since he had no support.