What did Roosevelt, Churchill, and Stalin agree to at the Yalta Conference?

AThey approved a plan for the Soviet Union to occupy Germany, Italy, and Japan after the war.

BThey called for a conference to discuss forming a new international organization, the United Nations.

CThey decided the best way to defeat Japan was to launch an invasion rather than drop an atomic bomb.

DThey approved a negotiated peace with Germany that would allow Hitler to remain in office.