All of the following statements about the Gulf of Tonkin incident are correct EXCEPT WHICH ONE?
a. The incident involved a North Vietnamese attack on two U. S. warships, though a
supposed second attack likely never took place

b. President Johnson claimed that the attacks on the U. S. ships were unprovoked, but in
reality they had been used to strike the North Vietnamese first
c. The incident led to a congressional resolution which gave President Johnson broad
discretion to wage war in Vietnam
d. The incident occurred in the final stages of the war in Vietnam, and led to the withdrawal
of U. S. troops