The worst recession since World War II started in which year?

Economists are reluctant to state that price controls are desirable or undesirable because

A) whether the gains from the winners exceed the losses from the losers is not strictly an economic question. B) it is impossible to evaluate the impact on quantity demanded and quantity supplied as a result of price controls. C) sometimes price controls result in increases in economic efficiency and sometimes they result in decreases in economic efficiency. D) economists are reluctant to conduct positive analysis of price controls.

Firms in perfect competition produce the productively efficient output level in the short run and in the long run

Indicate whether the statement is true or false