Suppose that XTel currently is selling at $30 per share. You buy 600 shares using $12,600 of your own money, borrowing the remainder of the purchase price from your broker. The annual interest rate on the margin loan is 10%. A. What is the percentage increase in the net worth of your brokerage account if the price of XTel immediately changes to (a) $33; (b) $30; (c) $27? (Leave no cells blank - be certain to enter "0" wherever required