Can I get help with problem 4 and 5

When there is a conflict between Net Present Value and other decision rules, an analyst should always use A) Net Present Value B) Internal Rate of Return C) Average Accounting Return D) Profitability Index A project has a required return of 8% with the following cost and cash flows: 5. Year 0 2 3 4 Cash Flow -$6,000 $12,000 $5,000 $28,000 $3,000 The Net Present Value is closest to: A) $13,710 B) $32,233 C) $34,367 D) $44,233