QUESTION 16 Which of the following is one of the most common sources of confusion regarding treatment of net working capital? forgetting that the firm's network is an important part of overhead expense for a project forgetting that net working capital is recovered at the end of a project omitting the discount factor in the firm's cost estimates reducing the first year's cash inflow by the discount factor for networking capital QUESTION 17 When estimating net operating cashflows, only incremental costs and revenues should be considered. Incremental, in this context, means extraordinary expenses, charges, and income unexpected gains or losses attributable to the project only nonrecurring