You now have $10,000, and the following investment plans are available to you during the next three years:

■ Investment A: Every dollar invested now yields

$0.10 a year from now and $1.30 three years from now.

■ Investment B: Every dollar invested now yields

$0.20 a year from now and $1.10 two years from now.

■ Investment C: Every dollar invested a year from now yields $1.50 three years from now.

During each year, you can place uninvested cash in money market funds that yield 6% interest per year.

However, you can invest at most $5000 in any one of plans A, B, or C. Determine how to maximize your cash on hand three years from now.