Which of the Following Statements Is Correct

Which of the following statements is correct?

A) After World War II,Stalin lived up to his promises to respect his Eastern European neighbors' borders.
B) After World War II,presidential authority increased at the expense of congressional and state power.
C) During World War II,the United States experienced a minor economic recession.
D) After World War II,the United States refused to join the United Nations.
E) After World War II,the United States experienced an economic recession.