Brandon buys 220 shares of Coca Cola at $35 a share on margin and short sale 200 shares of Pepsi shares at $40 a share. The broker charges interest of 8 percent on the loan. a. If the margin requirement is 25 percent, what is the maximum amount he can borrow? b. If he buys the stocks using the borrowed money and holds the securities for a year, how much interest must he pay? c. If after a year he sells Coca Cola for $30 a share and Pepsi for $28 a share, how much did he gain/lose on his investment if the interest payment is included in the calculation? d. What is the percentage gain/loss on the funds he invested?