Financial Market (14 marks) The following table is a snapshot of the limit order book of stock A. Bid Ask Price Size Price Size 80.0 100 82.0 200 79.5 150 84.0 200 78.5 350 85.5 300 75.0 400 86.5 400 72.0 200 87.5 300 a) If a limit buy order of 700 shares at $85 comes in, how many shares will be executed? What is the average price? (4 marks) b) What is the largest possible tick size of stock A? (2 marks) Stock A is available for short sales. Simon is going to go short by making a limit sell order of 100 shares at $80. How much margin does he need to post to facilitate this trade if the initial margin requirement is 60%? (4 marks) d) How can Simon close this position in (c)? What is his profit or loss (in percentage) if he closes his position in (c) at $72 later? (4 marks)