Which of the following is most likely to be a private good?

If the number employed is 190 million, the working-age population is 230 million, and the number unemployed is 10 million, then the unemployment rate is

A) 5%. B) 5.2%. C) 8%. D) 10%. E) 50%.

A firm sets its output where

A) marginal profit minus marginal cost equals zero (MP - MC = 0). B) marginal revenue minus marginal profit equals zero (MR - MP = 0). C) marginal revenue minus marginal cost equals zero (MR - MC = 0). D) marginal revenue minus marginal cost is greater than zero (MR - MC > 0)