Old Economy Traders opened an account to short-sell 2.000 shares of Internet Dreams at $60 per share. The initial margin requirement was 50% (The margin account pays no interest) A year later, the price of Internet Dreams has risen from $60 to $70, and the stock has paid a dividend of $400 per share. a. What is the remaining margin in the account (Round your answer to the nearest whole dollar.) Remaining margin b. If the maintenance margin requirement is 30%, Will Old Economy receive a margin call? Yes O No c. What is the rate of return on the investment? (Round your answer to 2 decimal places. Negative value should be indicated by a minus sign.) Rate of return