When calculating how much changes in the money supply will change nominal GDP, we use the money multiplier instead of the spending multiplier

According to the text, in the absence of uncertainty, no one can obtain a profit from the exclusive ownership of a scarce resource, such as a patent or a franchise, because

A) demand curves will be perfectly elastic. B) marginal cost will equal marginal revenue. C) profit requires active production rather than static ownership. D) the cost of retaining ownership will rise to eliminate any profit. E) the tax on capital gains will eliminate any profit.

Suppose a certain firm is able to produce 165 units of output per day when 15 workers are hired. The firm is able to produce 176 units of output per day when 16 workers are hired (holding other inputs fixed). Then the marginal product of the 16th worker is

a. 10 units of output. b. 11 units of output. c. 16 units of output. d. 176 units of output.