Which of the Following Statements Is Not  Correct

Multiple Choice

Which of the following statements is not  correct?

A) Total surplus is the sum of consumer and producer surplus.
B) Deadweight loss is the net loss of both consumer and producer surplus resulting from underproduction or overproduction of a product.
C) Deadweight loss is a measure of market inefficiency.
D) Total surplus is maximized when the actual quantity supplied exceeds the equilibrium quantity.