During the Vietnam War, the United States ​enlisted men tended to be from poor and lower-income backgrounds because:
A. ​Statistically, poorer people were more supportive of the government and its policies.
B. ​They sought opportunities outside their immediate surroundings.
C. ​Military recruitment offices tended to be located close to poorer areas.
D. ​They were least likely to qualify for a college deferment. e. ​none of these are correct