Which of the Following Statements Is True

Which of the following statements is true?

A) After the Second World War, the United States returned to isolationism.
B) After World War II, America went into another deep economic depression.
C) After World War II, Stalin lived up to all the agreements he made at Yalta.
D) For every American killed in World War II, the Russians lost fifty-nine.
E) World War II resulted in fewer casualties than World War I.