The practice of medicine in the United States came under widespread regulation _____

Which of the following statements is true?

a. Whenever marginal cost is below average total cost, marginal cost is decreasing. b. Whenever marginal cost is above average total cost, marginal cost is decreasing. c. Whenever marginal cost is above average total cost, average total cost is increasing. d. When marginal cost equals average total cost, marginal cost is minimized

Frictional unemployment will always exist since

A) some workers will always want to make a job transition. B) the capitalist system promotes unemployment. C) mismatches in skills will always exist. D) the U.S. economy will continue to shrink.