Operating a Fund Fees & Expenses

Pioneer Fund charges a 12b-1 fee of 1.0% and maintains an expense ratio of 0.75%.

Preserver Fund charges a front-end load of 2% and an expense ratio of 0.25% but no 12b-1 fee.

Assume the rate of return on both funds portfolios (before any fee) is 6% per year. How much will an investment of $100 in each fund grow to after?

(a). 1 year;

(b). 3 years;

(c). 10 years;

(d). which fee structure design attracts the long-term clients?

can i have more calculation details or reasons? thanks!