5. (17 Pts) Margin Trading and Short Sales: a. Assume you purchased 200 shares of GE common stock on margin at $70 per share from your broker. If the initial margin is 55%, how much did you borrow from the broker? b. You purchased 100 shares of IBM common stock on margin at $70 per share. Assume the initial margin is 50%, and the maintenance margin is 30%. Below what stock price level would you get a margin call? Assume the stock pays no dividend; ignore interest on margin. You sold short 150 shares of common stock at $27 per share. The initial margin is 45%. Your initial investment was d. You purchased 1000 shares of CSCO common stock on margin at $19 per share. Assume the initial margin is 50%, and the maintenance margin is 30%. Below what stock price level would you get a margin call? Assume the stock pays no dividend; ignore interest on margin. C