4. In comparing alternatives I and J by the present worth method, the equation that yields the resent worth of alternative l is: Alternative Alternative J First Cost, $ Annual Income, $/year Annual expenses, $/year Salvage Value, $ Life years -150,000 20,000 -9,000 25,000 250,000 40,000 14,000 35,000 The interest rate is 4 % per year. (a) PW:--150,000 + 11,000 (P/A ,4 %.3) + 25,000 (P/F ,4%,3) (b) PWi--150,000 + 11,000(P/A ,4%,6)+ 25,000(P/F ,4%,6) (c) PVV--150,000 + 11,000(P/A ,4%,6)-1 75,000(P/F ,4%,3) + 25,000(P/F,4%,6) (d) PW:--150,000 + 1 1,000(P/A ,4%,6)-125.000(P/F ,4%,3) + 25,000(P/F,4%6)