Which of the following statements about capital budgeting cash flow estimation is most correct?

A	Interest expense on any loans used to acquire the equipment must be included in the projects cash flows.

B	Money spent last year on a consulting report must be included in the projects cash flows.

C	Opportunity costs associated with land usage must be included in the projects cash flows.

D	Any impact on the cash flows of existing (current) projects must be included in the projects cash flows.

E	Both c. and d. are correct.