Dee Trader opens a brokerage account and purchases 100 shares of Internet Dreams at S56 per share She borrows $3,500 from her broker to help pay for the purchase The interest rate on the loan is 9%. a. What is the margin in De's account when she first purchases the stock? Margin b-1. If the share price falls to $46 per share by the end of the year, what is the remaining margin in her account? (Round your answer to 2 decimal places.) Remaining margin % O No O Yes c. What is the rate of return on her investment? (Negative value should be indicated by a minus sign. Round your answer to 2 decimal places.) Rate of return %