Which of the Following Statements Accurately Describes an Effect of the Tonkin

Which of the following statements accurately describes an effect of the Tonkin Gulf resolution?

A) Because it was in response to a Viet Cong attack upon an American military base, members of the American military quickly became experts in guerrilla warfare.
B) Because the resolution deeply divided Congress and almost failed to pass, Johnson took great caution and deferred to Congress for other military decisions.
C) Because nearly all senators supported the resolution, Johnson took their approval as reason to use the resolution as a substitute for a declaration of war.
D) Because the resolution authorized American naval aggression off the coast of North Vietnam, the war was soon limited only to a northern front.
E) Because the resolution was an attempt at diplomacy, Johnson began to take steps to de-escalate the Vietnam War and had a certain number of atomic weapons destroyed.