-Silvio's Pizza Is a Small Pizzeria

Multiple Choice

-Silvio's Pizza is a small pizzeria. The firm's production function is shown in the table above. Suppose that Silvio's costs include only the cost of renting ovens, which is $100 per oven per week, the labor cost, $280 per worker per week, and the opportunity cost of Silvio's entrepreneurship, $1,000 per week. If Silvio's uses Plant 1, the marginal product of the 3rd worker is ________ pizzas per week.

A) 33
B) 100
C) 20
D) 80