The Demands for Labor and Other Input Factors Are Called

The demands for labor and other input factors are called

A) derived demands, because the demand for these inputs depends on the demand for goods and services they are employed to produce.
B) developed demands, because the demand for these inputs is developed from an analysis of the costs of advertising products.
C) indirect demands, because the demand for these inputs is indirectly related to the costs of advertising products.
D) reverse demands, because the demand for these inputs varies inversely with the demand for goods and services they are employed to produce.