I think either B or C maybe?
Answer:
C.
Explanation:
Opportunity cost is the forgone benefit that would have been derived from an option not chosen. In this case, the lost is the potential profit they might make, which is C.
The answer is: A. What happened during the Vietnam War?
A national unity government, government of national unity (GNU), or national union government is a broad coalition government consisting of all parties (or all major parties) in the legislature, usually formed during a time of war or other national emergency.