4. (a) Suppose you decide to short sell some GameStop shares. Their current price is $5, and you have $5000 available to you. Your broker tells you that you have an initial margin requirement of 50%, with maintenance margin 35%. i. How many shares can you shortsell? How much cash will there be in the margin account? ii. Suppose GameStop rises in value to $6 per share. What percentage margin do you have now? iii. How high will GameStop have to rise before you will get a margin call? (b) Suppose you have purchased some GameStop shares on margin at $5 per share. You ask your broker to put in a limit sell order at $7, and a stop loss order at $4.50. i. What will happen if the stock price falls to $4.50 ? ii. What will happen if the stock price rises to $7 ? iii. Now suppose you had instead short-sold your GameStop shares (as in the first part of the question). What instructions might you give to your broker to minimise your losses and lock in your gains? (c) It is more difficult to maintain a short position than a long position. True or false? Explain your