The Equilibrium Price Established by Demand and Supply Could Be

Multiple Choice

The equilibrium price established by demand and supply could be called a "just right" price because:

A) any price above it would be "too high" and cause a shortage.
B) any price below it would be "too low" and cause a surplus.
C) it is the only price where the quantity demanded and the quantity supplied are equal.
D) of all of the above.