Aid engineering economics

An organization is examining four mutually exclusive alternatives; Alpha, Beta, Gamma, and Delta. You can assume that each alternative represents a simple investment in which an initial investment is made in the present followed by uniform annual revenues for fi years. The alternatives terminate simultaneously and at the same time of the last revenue is received. MARR = 15%. The results of feasibility analysis are summarized below: Incremental IRR Values between investment Projects in Corresponding Column and Row. Project lpha Beta Gamma Delta Alpha $25,000 Beta $30,000 Gamma $40,000 Delta $60,000 O For example, AIRRAlphasBeta = 30% Find the best alternative. Clearly explain your calculation and/or analysis steps