The Investments Fund sells Class A shares with a front-end load of 8% and 12b-1 fees of 0.25%, and Class B shares with 12b-1 fees of 0.75% annually as well as back-end load fees that start at 5% and fall by 0.5% for each full year the investor holds the portfolio (until the tenth year). Assume the portfolio rate of return net of operating expenses is 10% annually. If you plan to sell the fund after 7 years, what is the difference between the final amounts of Class A and Class B shares if your initial investment is $1000