Table 11-3 This Table Describes the Police Protection Demands for Three Equal

Multiple Choice

Table 11-3
This table describes the police protection demands for three equal sized groups of people in Safetyville. The second, third, and fourth columns show the number of person-hours of police protection per day that a group will demand for a given price (the first column) .
-Refer to Table 11-3. If the marginal cost of police protection is constant at $36 per person-hour, what is the efficient level of police protection to provide?

A) 9 units
B) 39 units
C) 66 units
D) 99 units