In computing the equivalent present worth of the cash flow series at period 0, which of the

Question:

In computing the equivalent present worth of the cash flow series at period 0, which of the following expressions is incorrect ?(a) P = $100(P/A, i, 4)(P/F, i, 4).(b) P = $100(F/A, i, 4)(P/F, i, 7).(c) P = $100(P/A, i, 7) - $100(P/A, i, 3).(d) P = $100[(P/F, i, 4) + (P/F, i, 5) + (P/F, i, 6) + (P/F, i, 7)].