Because of the Different Cash Flow Patterns, It Is Not

Because of the different cash flow patterns, it is not appropriate to use ________ to discount all cash flows because each cash flow should be discounted at ________ that is appropriate for the time period in which the cash flow will be received.

A) the same interest rate; a different interest rate
B) the same interest rate; a unique interest rate
C) a different interest rate; a common interest rate
D) a different interest rate; a unique interest rate