Which of the Following Is a Consequence of Rent Controls

Which of the following is a consequence of rent controls established to keep housing affordable for the poor?

A) Less rental housing is available than if the rent controls were not in place.
B) The quality of rental housing improves as landlords seek to attract the best tenants.
C) Landlords are incentivized to produce and offer more rental units to maintain profits.
D) All of these are consequences of rent controls.