The Total Surplus in a Market Is

The total surplus in a market is:

A) the excess supply due to a price above the equilibrium price.
B) the surplus that accrues when a good is not scarce, defined as the total amount (if any) by which quantity supplied exceeds quantity demanded at a zero price.
C) the net benefit to consumers, defined as the excess of consumer surplus over producer surplus.
D) the sum of consumer surplus and producer surplus.