Which of the Following Is True of President Johnson's Response

Which of the following is true of President Johnson's response to the August 1964 report that U.S. destroyers had been attacked twice by North Vietnamese patrol boats in the Gulf of Tonkin?

A) Even though evidence of the second attack was questionable, President Johnson ordered retaliatory air strikes against North Vietnam.
B) Johnson suggested the use of tactical nuclear weapons against strategic targets in North Vietnam.
C) Johnson expressed grave fears that the incident would bring the United States and the Soviet Union into armed conflict.
D) The incident convinced Johnson that North Vietnam was being supplied with sophisticated military equipment by the Soviet Union.