Under Rent Control,landlords Cease to Be Responsive to Tenants' Concerns

Under rent control,landlords cease to be responsive to tenants' concerns about the quality of the housing because

A) with rent control,the government guarantees landlords a minimum level of profit.
B) they become resigned to the fact that many of their apartments are going to be vacant at any given time.
C) with shortages and waiting lists,they have no incentive to maintain and improve their property.
D) with rent control,it becomes the government's responsibility to maintain rental housing.