Short Sales $($LO$4,$ CFA$3)$ You believe the stock in Freeze Frame Co$.$ is going to fall, so you short $600$ shares at a price of $$72.$ The initial margin is $50$ percent. Construct the equity balance sheet for the original trade. Now construct equity balance sheets for a stock price of $$63$ and a stock price of $$77.$ What is your margin at each of these stock prices? What is your effective annual return if you cover your short position at each of these prices in five months?