Please give me 2 different answers

Suppose you were evaluating three projects: Project X, Project Y and Project Z. After performing Payback, Net Present Value and Internal Rate of Return analyses, you obtained the following: Project Y Project Z 5.1 years 4.5 years payback NPV IRR Project X 4.5 years 3,211 7.27% 3,434 6.87% 3,212 7.26% Which Project would you suggest to management for undertaking? If you aren't comfortable making a recommendation now, what else might you do to help you decide