After the 1972 Election,President Richard Nixon,to Prompt a Peace Settlement

After the 1972 election,President Richard Nixon,to prompt a peace settlement with North Vietnam,

A) allowed the opening of North Vietnamese harbors.
B) withdrew American forces as North Vietnamese troops left from the South.
C) ordered an increase in the aerial bombing of North Vietnam.
D) broke off diplomatic negotiations with North Vietnam.
E) evacuated the American embassy in Saigon.