An investor borrows $300,000 to add to her own money in the amount of $400,000 to purchase 20,000 shares of a stock. The loan interest rate is 5.8% per year. At the end of the year, the price of the stock is $49.40 per share. Calculate the investor's rate of return for the year if she sells all her shares. 41.1% 71.1% 67.7% 88.3% 53.5%