D Question 7 4 pts New York City has been experiencing a housing emergency for quite some time. Apartments are difficult to come by. In fact, the vacancy rate has been below 5 percent since World War II. The" most likely cause of the housing emergency is: O a price floor on rent higher than equilibrium price. O a price ceiling on rent lower than equilibrium price. too high incomes in New York City. O a lack of a rationing mechanism to distribute existing apartments