De Trader opens a brokerage account and purchases 300 shares of Internet Dreams at $40 per share. She borrows $4,000 from her broker to help pay for the purchase. The interest rate on the loan is 8%. a. What is the margin in De's account when she first purchases the stock? (Hint: consider how much funds are from Dee vs from loans) b. If the share price falls to $30 per share by the end of the year, what is the remaining margin in her account? (Hint: calculate the equity value of De's acoount when price falls to 530 ) c. If the maintenance margin requirement is 30%. will she receive a margin calf d. What is the rate of retum on her investment