Scenario 10-1 The demand curve for gasoline slopes downward and the supply curve for gasoline slopes upward. The production of the 400th gallon of gasoline entails the following: . a private cost of $2.83; - a social cost of $3.12; a value to consumers of $3.23. Refer to Scenario 10-1, Let QMARKET represent the equilibrium quantity of gasoline, and let Qortimum represent the socially optimal quantity of gasoline. Which of the following inequalities is correct? O 400