In a closed economy, public saving plus private saving is equal to

According to your textbook, the following is the prime cause of traffic congestion:

A) Population growth B) The American automobile industry C) Most roadway space is not priced. D) A lack of commitment to public transportation expansion

All the following are examples of accounting costs, except

a. Interest payments on borrowed funds b. Costs paid to suppliers for product ingredients c. Cost of equity d. Depreciation expenses related to investments in buildings and equipment