At the Teheran Conference in Late 1943

At the Teheran Conference in late 1943,

A) Franklin Roosevelt knew Joseph Stalin urgently needed American aid in fighting Germany.
B) Winston Churchill agreed to enter the war in the Pacific as soon as Germany was defeated.
C) Franklin Roosevelt urged Joseph Stalin to postpone his westward offensive.
D) it was agreed that Poland should be put under Soviet control after the war.
E) Franklin Roosevelt promised an Anglo-American second front within six months.