Consider the Following Production and Cost Schedule for a Firm

Multiple Choice

Consider the following production and cost schedule for a firm.The first column shows the number of units of a variable factor of production employed by the firm.
TABLE 13-1
-Refer to Table 13-1.The marginal product of the 15th unit of the factor of production is

A) -2.
B) 0.
C) 2.
D) 82.
E) 84.