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 896. a. What is the margin in De's account when she first purchases the stock? Margin b-1. If the share price falls to $30 per share by the end of the year, what is the remaining margin in her account? Remaining margin b-2. If the maintenance margin requirement is 30%, will she receive a margin call? Yes No 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