A stock sells for $25 per share. You purchase 150 shares for $25 a share (i.e., for $3,750), and after a year the price falls to $22.50. a What will be the percentage return on your investment if you bought the stock on margin and the margin requirement was 25 percent? Round your answer to one decimal places. b. What will be the percentage return on your investment if you bought the stock on margin and the margin requirement was 50 percent? Round your answer to one decimal places. c.What will be the percentage return on your investment if you bought the stock on margin and the margin requirement was 75 percent? Round your answer to one decimal places.