Which statement explains how US involvement in vietnam began
A. president truman stationed US troops in Vietnam to provide reinforcements during the korean war
B. president Kennedy sent US military advisors to aid south Vietnam in its attempts to subdue the Vietcong.
C. president Eisenhower sent US troops to vietnam to replace french troops that were withdrawing from indochina
D. president johnson ordered the bombing of north vietnamese cities to prevent the overthrow of the south vietnamese government.