The Main Issue of the Potsdam Conference Seemed to Be

The main issue of the Potsdam Conference seemed to be

A) whether or not the United States should use the atom bomb on Japan.
B) determining how and when free elections would be held in eastern European countries after the war ended.
C) establishing rules for the granting of freedom to eastern European countries.
D) Stalin's disinclination to come to terms with the Allied leaders who had replaced Churchill and FDR.
E) whether the United States and the Soviet Union would be able to remain partners until the war was over.