Today I short 1 contract of the March 2020 E-mini S&P 500 future (whose underlying is 50*S&P 500 index. That is, one contract gives me the exposure of 50 times the change in S&P index. For more information, refer to http:// www.cmegroup.com/trading/equity-index/us-index/e-mini-sandp500_contract_specifications.html). Suppose I put down an initial margin of 10,000. If tomorrow the future price goes up by 30 points. What is the balance of my margin account? 8500 9970 3 10030 11500