9. Two types of power converters are under consideration for a specific application. An economic comparison is to be made using a MARR of 20% and the following cost estimates Alternative AlphaBeta $10,000 $20,000 Data Service Life (Years) First Cost Salvage Value Annual Operating Cost$2,500 5,000 $1,200 0 (a). Compute the equivalent annual costs of each alternative and recommend the economically superior alternative. (b). Determine a salvage value for the Beta system such that the Beta system will have an equivalent uniform annual cost equal to the Alpha system