Which of These Events Did not Happen at Potsdam

Which of these events did not happen at Potsdam?

A) Churchill was called home mid-conference because his party had been defeated in a general election.
B) The Allies divided Germany and Austria into four occupied zones.
C) Truman learned that the atom bomb had been tested successfully.
D) Poland was given an outlet to the sea and had its prewar territorial integrity and political independence fully restored and protected.
E) Both the Americans and British became more concerned about and suspicious of Stalin and his political intentions than they had been earlier in the war.