Which of the following statements is true?

a

A good example of a price ceiling is rent control.

b

Aprice flooris a government-imposed maximum price in a market.

c

Price floors are set on goods whose producers need some special support (such as farmers, who face a lot of price volatility); the current equilibrium price is "so low" that many producers may go bankrupt.

d

All of the above.

e

Only a) and c)