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. What is the value of the 39^th unit of police protection in Safetyville?

A) $24
B) $42
C) $54
D) $72