Benefits and Demand 5

John K. Dough often attends performances at his local comedy club. The following table shows the number of performances he attends per week.
QuantityTotal Benefit
00.0
17.5
214.5
321.0
427.0
532.5
637.5
742.0

Figure CC shows John's demand curve for comedy performances per week, with an admission price of 4.90. In the diagram John's consumers' surplus is

line CB
line AB
triangle ABC
30
not shown