A decrease in the demand or fish ?

A. decrease the value of the marginal product of fishermen reduces their wage, and reduces employment in the fishing industry
B. increase the value of the marginal product of fishermen increase their wage, and increase employment in the fishing industry.
C. decrease the value of the marginal product of fishermen, reduces their wage, and increases employment in the fishing industry
D. increase the value of the marginal product of fishermen increase their wage and decreases employment in the fishing industry