5. (20%) You sell short 200 shares of Doggie Treats Inc. that are currently selling at $25 per share. You post the 50% margin required on the short sale. What is your investment return if stock price is $30 now? If your broker requires a 30% maintenance margin, at what stock price will you get a margin call? (You earn no interest on the funds in your margin account, and the firm does not pay any dividends.)