Which of the following statements about a tariff is true?
a. A tariff in Creases producer surplus, decreases consumer surplus, increases revenue to the government, and reduces total surplus.
b. A tariff increases consumer surplus, decreases producer surplus, increases revenue to the government, and reduces total surplus.
c. A tariff increases producer surplus, decreases consumer surplus, increases revenue to the government, and increases total surplus,
d. A tariff increases consumer surplus, decreases producer surplus, increases revenue to the government, and increases total surplus.