Answer: b. The quality of available rental housing units falls.
d. Nonprice methods of rationing emerge.
Step-by-step explanation:
Rent control is simply defined as a government program which involves placing a limit on the fee that can be charged by a landlord for the lease if his or her house. Rent control are usually put in place to make the cost of living affordable to the people especially the low income earners.
Based on the information given in the question, the common long-run outcomes include the quality of available rental housing units falls and also there'll be emergence of non price methods of rationing.