20. Consider the following alternatives:

i. $100 received in one year ii. $200 received in 5 years iii. $300 received in 10 years

a. Rank the alternatives from most valuable to least valuable if the interest rate is 10% per year.

b. What is your ranking if the interest rate is only 5% per year?

c. What is your ranking if the interest rate is 20% per year?