I found the pie chart that should accompany this problem, as well as, the choices of answer for this problem.
A $16
B $18
C $20
D $22
E $24
Total production from crude oil: 60 million barrels
Gasoline production: 34%
60 million barrels * 34% = 20,400,000
Total income: $408 million
408,000,000 / 20,400,000 = $20 choice C.