b) Suppose you are bearish on BHP and decide to sell short 100 shares at the current market price of $40 per share. If the broker's initial margin requirement is 60% of the value of the short position and the maintenance margin is 30%. 1) If the price of BHP immediately changes to $55, will you receive a marginal call? If so, please calculate the additional margin you need to deposit in the account 2) How high can BHP's price increase before you get a margin call? (2 marks) (2 marks)