Matt sold 500 shares of stock at 27.50 a share. The sale was a short sale with an initial margin requirement of 60 percent. The maintenance margin is 40 percent. The stock is currently trading at $21.83 a share. (a) (0.5 point) What is his initial margin deposit? (b) (0.5 point) What is his current account margin in dollars? (c) (0.5 point) What is his current account margin in percent? Paragraph B / 66 E PX ND Path: P