8. A farmer must borrow $20,000 to purchase a tractor. The Bank has offered the following choice of payment pla each determined by using an interest rate of 8%. If the farmer? s minimum attractive rate of return (MARR) is 15% Which plan should he choose? Explain in detail Plan A: $5010 per year for 5 years Plan B: $2956 per year for 4 years plus $15,000 at end of 5 years Plan C: Nothing for 2 years, then $9048 per year for 3 years