3There are two mutually exclusive project, where the basic information is provided below. Assume a DN alternative does not exist. Initial Cost Annual net profit $6,000 Useful Life $35,000 $7,111.11 Infinity S50,000 $25,000 Infinity S30,000 Salvage value a) Using the incremental cost analysis, calculate the incremental rate of return for switching from project A to B b) Assuming MARR Is 10% per year, what would be your final decision? c) If the DN exist, do your decision change? Why