To Say That the Housing Market Is in Equilibrium Means

To say that the housing market is in equilibrium means that

A) there are no vacant houses
B) the number of houses that are being constructed is equal to the housing stock
C) the number of houses that are currently empty is equal to the number of households currently looking to buy a house
D) the quantity demanded of houses is equal to the number of houses currently under construction
E) the number of houses that people want to own is equal to the housing stock