Answer:
Option (a) and (c) are correct.
Explanation:
We know that rent control is an example of price ceiling. If the price of apartments set below the equilibrium price level then there is increase in the demand for apartments. So, the demand for apartments exceeds quantity supplied at the prevailing market price.
(a) Therefore, the quality of rental housing falls because of the lower price of the apartment. As this will become less profitable for the landlords, so they are least interested in the maintenance of the apartments.
(b) This will also lead to develop black market. The landlords are trying to fool the higher authorities and rent their apartments at a higher cost because this will be done without any type of legal documentation of the apartments or results from the manipulation of the rules.