Use the Table Below to Answer the Following Question

Multiple Choice

Use the table below to answer the following question.
Table 15.2.3

-Refer to Table 15.2.3.The first two columns of the table show the demand schedule for electricity from a coal burning utility;the second and third columns show the utility's cost of producing electricity. The marginal external cost of the pollution created is equal to the marginal cost.
Suppose the government levies a pollution tax such that the utility generates the efficient quantity of electricity.The pollution tax is ________ cents a kilowatt hour.

A) 2
B) 4
C) 6
D) 8
E) 10