Which is an example of what critics of the war called escalation? A. In March 1965, there were 60,000 U. S. soldiers in Vietnam; in early 1969, there were over half a million U. S. soldiers in Vietnam.
B. The U. S. used a bombing campaign that destroyed buildings, villages, bridges, and morale in North Vietnam.
C. The Viet Cong was able to quickly replace soldiers it lost in battle.
D. President Johnson asked for a tax increase to cover the costs of the war.​