Your firm buys a $20,000 tractor from a supplier. This supplier offers you three payment plans: Today in 6 months in 1 year Plan A $12,000 $4,000 $4,000 Plan B $10,000 $7,000 $3,000 Plan C $10,000 $0 $10,000 To be clear, in Plan A, you would pay $12,000 today, $4,000 in 6 months, and the final $4,000 in 1 year. Assume you will definitely need to pay in full; there is no chance the supplier goes out of business. Which payment plan would you choose? Why?