The basic idea of present value of multiple cash flows calculated by discounting back one period at a time is
A、from the farthest cash to discount back one period and plus the previous period cash flow, then to discount back one period again and then plus the previous period cash flow, and to continue the preceding process until present value is calculated
B、from the farthest cash to discount back one period, then to discount back one period again, and to continue the preceding process until present value is calculated
C、from the farthest cash to compound and plus the previous period cash flow, then to compound again and then plus the previous period cash flow, and to continue the preceding process until present value is calculated
D、from the farthest cash to compound, then to compound again, and to continue the preceding process until present value is calculated