Project1 costs, Year 1 through Year 4: $100,000; $10,000;$10,000; $10,000 Project1 revenue, Year 1 through Year 4: $0; $5,000;$50,000; $110,000 Project2 costs, Year 1 through Year 4: $120,000; $15,000; $5,000;$5,000 Project2 revenue, Year 1 through Year 4: $2000; $50,000;$100,000; $150,000 Project 3 costs, Year 1 through Year 4: $50,000; $50,000; $10,000; $10,000 Project 3 revenue: $5,000; $70,000; $70,000; $50,000 Calculate payback period for each project. Fill in the blanks: just type the numbers without labels, dollar signs, commas, etc.