Compare the revenue alternatives shown below using the present worth analyses. Assume the MARR is 8% per rear. Which alternative should be selected? Item Alt. A Alt. B First cost $ 80000 90000 Annual income, $/Year 20000 25000 Annual cost, $/year 10000 15000 Salvage value 25000 20000 Life, year 7 7 PW of Alternative A: PW of Alternative B: Which alternative should be selected? (Use one of the following symbols A, B, DN)