Wanda's is a fish store that hires students to pack the fish. The fish market is competitive. Originally the price is 50 a kilogram. The market for packers is campetitive and their market wage rate is $7.50 an hour. Then the market price of fish falls to 33.33 a kilogram but the wage rate of fish packers remains at $7.50 an hour. 18) Refer to Fact 17.2.1. As a result, the students' marginal product and the students' value of 18) marginal product A) does not change; decreases B) decreases; does not change C) does not change; does not change D) decreases; increases E) decreases; decreases