The Following Figure Shows the Demand and Supply Curves for Gas

Multiple Choice

The following figure shows the demand and supply curves for gas. D₁ is the initial demand curve, and S is the supply curve.

-Refer to the figure above.When the demand curve for gas is D₂ and the supply curve for gas is S,the surplus in the market when price is $8 is ________ gallons.

A) 20
B) 25
C) 50
D) 55