Which of the Following Statements Is True of the Cumulative

Which of the following statements is true of the cumulative expenditure curve?

A) The early expenditures curve initially slopes downward and then starts sloping upward.
B) The late expenditures curve is representative of product development in technical fields such as optics.
C) The late expenditures curve initially slopes upward and then starts sloping downward.
D) The early expenditures curve is representative of product development in technical fields.