Which of the following statements is correct about the rental market for apartments? A. The average monthly rent for an apartment is a type of price. B. When the population of a city grows rapidly, the demand curve for rental apartments shifts to the right resulting in an increase in the equilibrium rent for apartments. C. Both (A) and [B] are correct. D. When the population of a city grows rapidly, the result will be a movement along the demand curve for rental apartments