William is bearish on TAS and decide to sell short 30,000 shares at the current market price of $52 per share. The initial margin is 60%. The margin account pays no interest. A week later, the price of TAS has risen to $58.

a. What is the remaining margin in the account?

b. If the maintenance margin is 35%, will William receive a margin call?

c. What is the rate of return on the short position?