Among all possibleprices, what makes the equilibrium priceunique? (Select all that apply.)

A.

The quantity supplied is equal to the quantity demanded at the equilibrium price.

B.

The only price that can persist and not change is the equilibrium price.

C.

There is a shortage of the product (Qd>Qs) at the equilibriumprice, and the price will rise.

D.

There is a surplus of the product (Qd