Please help!!

(05.03 HC) Use the data in the tables to answer the question that follows. Market Firm Price of Output Quantity Supplied of Output Quantity Demanded of Output Quantity of Labor Total Product $5 25,000 60,000 0 0 $10 50,000 50,000 15 105 $15 75,000 40,000 30 190 $20 100,000 30,000 45 265 $25 125,000 20,000 60 325 What is the marginal revenue product of the 60th unit of labor, assuming this market is perfectly competitive in both the factor and output markets? O $30 O $40 O $80 O $100 $3,250