An investor contracts his or her broker to sell one September Crude Oil WTI Futures (CLU2). The current future price is $93.89 per barrel. The contract size is 1,000 barrels. The initial margin is $9,460 per contract, and the maintenance margin is $8,600 per contract. Please calculate the daily and cumulative gain and margin balance. Please also indicate when the investor will get a margin call and how much extra fund he or she needs to deposit before closing out the position