U)SSugar Import Quotas Have Existed for More Than Fifty Years

U) S.sugar import quotas have existed for more than fifty years and preserve about half of the U.S.sugar market for domestic producers.Why does the United States continue to have these quotas?

A) to support a mass market for sugar
B) to control the supply and demand for sugar
C) to increase the cost of sugar
D) to improve the promotion of sugar
E) to reduce competition for its domestic sugar industry