Answer questions 1, 2, and 3 based on the following information.

Number of Workers Units of Output

0 0

1 40

2 90

3 126

4 150

1. The marginal product of the third worker is

A) 24 units of output.

B) 150 units of output.

C) negative.

D) 36 units of output.

2. Average product is at a minimum when the number of workers that are hired is

A) 1.

B) 4.

C) 3.

D) 2.

3. Output (Total Product) is maximized when

A) average productivity is at its maximum.

B) the "law of diminishing returns" sets in.

C) marginal productivity is zero.

D) marginal productivity is at its maximum.