Stevie invest $100,000 from her lemonade stand sales. She is considering a savings account (investment A), which is available at the beginning of every year and yields 3% per year, as well as another five investments (B through F) whose cash flows are summarized below: Cash Inflows and Outflows at Beginning of Each Year Investment 

Year 1 Year 2 Year 3 Year 4 Year 5 

B −1 0.45 1.05 C −1 1.30 D −1 0.20 1.45 E −1 1.30 F −1 1.25 Entries of −1 in the table indicate when an investment is available, and positive entries indicate returns on investment. For example, for every $1 she invests in B at the beginning of year 1, she will receive $0.45 at the beginning of year 2, and another $1.05 at the beginning of year 3. Write a linear optimization model to help Stevie plan her investments to maximize the amount of money on hand at the beginning of year 5.