Suppose that on Day O you take a long position in a futures contract on copper maturing on Day 3. Each contract is on 2,000 kilograms of copper, with the closing futures price on Day O equal to H0 = $93 per kilogram. Suppose the closing futures prices on Day 1, 2, and 3 are H1 = $106 and H2 = $98, H3 = $93, respectively. The futures contract is marked to market daily, at the end of the trading day, with resulting gains and losses settled using a margin account. Compute the cash flow into/from the margin account resulting from marking to market a long position in 1 futures contract at the end of Day 2. State the cash inflow as a positive number, and cash outflow as a negative number. $