Use the Figure Below to Answer the Following Question(s)

Multiple Choice

Use the figure below to answer the following question(s) .
Figure 4-9
-Refer to Figure 4-9. The market for gasoline was initially in equilibrium at point b and a $.40 excise tax is illustrated. How much revenue would the $.40 gasoline tax raise?

A) $18 million
B) $36 million
C) $72 million
D) $100 million