Consider the information shown below for each of three alternatives to be considered in an economic analysis. MARR is 10% per year. Based on present worth analysis, which alternative is preferred?

Project Data (Million Dollars)

	Alternative 1	Alternative 2	Alternative 3
Initial investment ($)	20	50	100
AOC ($/year)	5	5 (1st 5 years) 3( from year 6 to the end)	3
Revenue ($/yr)	12	16	15
Project Life (years)	5	15	Infinity