Could someone help me answer 3? Thank you!

The owner of a seniors residence is planning the purchase an electrical generator to minimize the discomfort due to electrical power outages. The key parameters of the three advertising campaigns are provided below Alpha 600,000 Gamma 800,000 roject Parameters Beta 700,000 1. Initial Cost (S) 600,000 at EOY1 770,000 at EOY1 900,000 at EOY decreasing by 29 increasing by increasing by 1% 5,000 annually thereafter 400,000 at EOY1 572,000 at EOY1 640,000 at EOY1 increasing by 1% annually thereafter 2. Revenues ($) annually thereafter annually thereafter increasing by 000 annually thereafter increasing by 40,000 annually thereafter 3. Operating Costs 4. End-of-life salvage 5. Useful life (years) 4, 15,000 10,000 value ($ 10 Industry Standard4 years MARR-10% 1. Alpha's Net Present Worth (NPW) (rounded to the nearest $100) is a) $44,900; b) $45,200; c) $49,900; d) $56,900 2.Beta's NPW (rounded to the nearest $100) is a) $54,600; b) $58,900; c) $59,700; d) $60,900 3.If Beta was repeated for a second five-year period (i.e., years 6 to 10), its NFW (rounded to the nearest $100) after 10 years would be a) $193,400; b) $229,400; c) $227,600; d) $233,900