please solve as the excel sheet

Question: Consider the three independent projects: Period Alpha(Rs)Beta(Rs) Gamma(Rs) 0 -100,000 -200,000 -300,000 1 30,000 40,000 40,000 2 30,000 40,000 40,000 3 30,000 40,000 40,000 4 40,000 120,000 240,000 Requirement: Considering the following techniques which project will you recommend (Required Rate 8.5%): 1- PBP 2- NPV 3- Profitability Index Also caluclate the IRR of any two projects only