(Table: Total Product of Labor at Debbie's Bakery) Debbie Owns

Multiple Choice

(Table: Total Product of Labor at Debbie's Bakery) Debbie owns a bakery and can hire workers to produce cakes selling in a competitive output market at $10 each.The table Total Product of Labor at Debbie's Bakery shows the relation between the number of workers and the number of cakes produced.What is the value of the marginal product for the fourth worker?

A) 5 cakes
B) $50
C) $210
D) 21 cakes