When Discounting Cash Flows of the All-Equity Firm

When discounting cash flows of the all-equity firm,

A) the revenues and expenses must be measured as they occur rather than on an incremental basis.
B) there is no need to incorporate the risk premium of that the firm's stockholders would demand in the discount rate.
C) all cash flows should be measured in the same currency.
D) revenues and expenses should be measured on a pre-tax cash flow basis.