There are three alternatives X,Y,Z. With 10% MARR, which alternative should be chosen based on following conditions and why? For X, initial cost is $10k, yearly revenue is $6K, Salvage is $1k and useful life is calculated as 2y rs. For Y, initial cost is $15k, yearly revenue is $10K, Salvage is $2k and useful life is calculated as 3yrs. For Z, initial cost is $12K, yearly revenue is $5K, Salvage is $3k and useful life is calculated as 4vrs