Old Economy Traders opened an account to short-sell 2,100 shares of Internet Dreams at $62 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 $62 to $70, and the stock has paid a dividend of $1.50 per share. a. What is the remaining margin in the account? (Round your answer to the nearest whole dollar.) Remaining margin $ 48,300 b. If the maintenance margin requirement is 30%, will Old Economy receive a margin call? O No Yes c. What is the rate of return on the investment? (Round your answer to 2 decimal places. Negative value should be indicated by minus sign.) Rate of return 25.81%