Q.1 Fatima Dow, a derivatives trader at HEC Hedge Fund, entered into a March silver futures contract on the New York Mercantile Exchange (NYMEX) to purchase 5,000 troy ounces of silver at the futures price of USD 16.96 per ounce. According to NYMEX rules, an initial margin of USD 6,400 and a maintenance margin of USD 3,000 is required to enter and retain the futures position. If the price of silver futures contracts dropped to USD 16.92, USD 16.90, and USD 16.73, at the end of the first, second, and third day, respectively, then what is the margin account balance at the end of the second day?