plzz help..i need quick


The overall purpose of the conferences at Casablanca (January 1943), Teheran (November 1943), Yalta (February 1945), and Potsdam (July 1945) was to
A)
devise a solution to stop the Holocaust.
B)
design an atomic bomb to end World War II.
Eliminate
C)
plan the Allied victory against Axis forces.
D)
create a plan to drive Mussolini from Africa.