Please help, am I doing this correctly? How do you determine which is best option? Thank you.

General Information : Cost ofMechine Useful Life (years) Value Working capital yearly b&intenanee COSI Required 'Rte Of Return - Tax 'Rite Annual straight4ine depreciation NPV Formula: (25,259.87} $ 421/000 Net present Value Analysis $- -so,ooo S 95,000 30,000 22% $61,833 Yea Yea Yes cash Rows Cost af Machine (421,000) salvage value of Machine Working Capital (95,000) Total Contribution Margin 300,000 Total Other Fixed Costs (160,000) Yearly 'Maintenance Cost S (30000) meson Income@ept depreciation) (107,800) 315,000 $ (160,oooy S (30,000) $ (111,100) $ 13,603' S 27,503 $ 380,000 (150,000} (30,000 y (123,200) 13,603 90,403 440,000 $ (30,000) S (129,800)' $ 13,603 S 173,803 $ Yer 440,000 020.000) (30,000) (129,800) 13,603 173,803 S S Tax Shild Total Cash Flows 13,603 (516,000) $ 15,803 95,000 440.000 (120,000) (30.000) (t 29,800) 13,603 318.80) Discounted CF (Optianl} $14,237.17 $66,102.08 $103,14398 S170.us 24 Net preent Value Project profitability Ifidu (25,260) 0.05 (516,000) $490,740.13