You purchase 70 shares for $50 a share ($3,500), and after a year the price rises to $60. Calculate the percentage return on your investment if you bought the stock on margin and the margin requirement was (ignore commissions, dividends, and interest expense): a. 25 percent. Round your answer to one decimal place. % b. 35 percent. Round your answer to one decimal place. % c. 85 percent. Round your answer to one decimal place. % Icon Key Check My Work