I need help with this incremental internal rate of return problem.

Which one of the projects in the table below is preferred using Incremental Internal Rate of Return analysis and an 7% MARR? Year 0 1 2 3 4 5 X -900 410 100 200 300 200 Y -700 300 100 100 250 200 z -1000 400 100 200 350 500 W -800 405 100 150 275 200