A Rent Ceiling Results in a Shortage

A rent ceiling results in a shortage. As a result, which of the following do you expect?

A) a shortage of applicants for the apartments available
B) discrimination as tenants choose their landlords, possibly based on race, age, or gender
C) a black market for apartments whereby higher rents are obtained through various other charges
D) in the long-run, more and more people will want to become landlords