Shares of RossCorp stock are selling for $45 per share. Brokerage commissions are 2 percent for purchases and 2 percent for sales. The interest rate on margin debt is 6.25 percent per year. The maintenance margin is 30 percent. At the end of one year, shares of RossCorp stock are selling for $55 per share and the company paid dividends of $0.85 per share. Assuming that you paid the full cost of the purchase, what is your rate of return if you sell RossCorp stock?

a. 19.28 percent

b. 23.51 percent

c. 14.96 percent

d. 22.32 percent

e. 18.08 percent