question 4 (10 pts): the first design alternative (a) requires a $300,000 investment and will produce net annual revenue of $55,000 over the 10-year planning horizon. the second alternative (b) requires a $450,000 investment and will produce net annual revenue of $80,000 annually. both alternatives are expected to have negligible salvage values at the end of the 10-year planning horizon. based on a 10 percent marr and an irr comparison, which design (if any) should be chosen?