At the Larson Bakery the marginal products of the first, second, and third sales clerks are 20, 17, and 11 customers served, respectively. The total product (number of customers served) of the first two sales clerks is

A) 3.
B) 17.
C) 37.
D) 48.

Marginal Products

The additional output that results from using one more unit of a particular input, holding all other inputs constant.

Sales Clerks

Employees in retail stores responsible for assisting customers, conducting transactions, and maintaining the arrangement of goods.

Customers Served

A measure of how many clients or customers a business, organization, or service has provided for in a given period.