De Trader opens a brokerage account and purchases 400 shares of Internet Dreams at $26 per share. She borrows $3,200 from her broker to help pay for the purchase. The interest rate on the loan is 10\%. Required: a, What is the margin in De's account when she first purchases the stock? b. If the share price falls to $16 per share by the end of the year, what is the remaining margin in her account? c. If the maintenance margin requirement is 30%, will she recelve a margin call? Yes No d. What is the rate of retum on her investment? (Negative value should be indicated by a minus sign. Round your answer to 2