question 6 answer please

6. If you had a choice between the following scenarios, which one would you choose? Assume the cost of capital is 10% for all options and that you want the highest amount of a. Invest $5,000 every year from age 21 to 23 b. Invest $7,000 every year from age 31 to 37 c. Invest $10,000 every year from age 31 to 35