After a Peace Treaty Was Signed in Paris in 1973

Multiple Choice

After a peace treaty was signed in Paris in 1973 to end the Second Indochinese War,

A) President Johnson decided to escalate the fighting in nearby Laos.
B) North and South Vietnam settled their differences peacefully.
C) America took control of all of Vietnam.
D) North Vietnam couldn't reach a political accord with South Vietnam, and finally attacked and defeated the south two years later.
E) the United States elected Richard Nixon as its new president.