Refer to the Mini-S\&P contract in Figure 22.1. Assume the closing price for this day. a. If the margin requirement is 30% of the futures price times the contract multiplier of $50, how much must you deposit with your broker to trade the June maturity contract? (Round your answer to the nearest whole dollar.) b. If the June futures price increases to 2599.70 , what percentage return will you earn on your investment if you entered the long side of the contract at the price shown in the figure? (Do not round intermediate calculations. Round your answer to 2 decimal places.) c. If the June futures price falls by 1%, what is your percentage return? (Negative amount should be indicated by a minus sign. Do not round intermediate calculations. Round your answer to 2 decimal places.) Figure 22.1 Futures listings Source: The Wall Street Journal, July 6, 2016