Suppose that a short selling account has a 50% initial margin and 30% maintenance margin. With a margin of $30,000 and a stock price of $100 one can sell short 600 shares. If the stock price is $85: Select one: O a. Stock owed is $24,000, Equity is 36,000 and Margin is 66.67% O b. Stock owed is $51,000, Equity is 39,000 and Margin is 76.47% O c. Stock owed is $54,000, Equity is 36,000 and Margin is 66.67% O d. Stock owed is $54,000, Equity is 36,000 and Margin is 44.44%