On 1/30 at the end of the day, Joan sold (took a short position in) 1 futures contract (one contract is agreement to buy or sell Euros 45,500) at a rate of USD 1.35 per Euro, contract expires on 6/18. Initial margin=$1,330 and maintenance margin is $1,005. On 1/31 and 2/1, the futures rate expiring on 6/18 is USD 1.365, and USD 1.370 respectively. As per "Marked to Market" daily mechanism of currency futures contracts, what shall be Joan's margin account balance at the end of 1/31(Assuming
that Joan will not withdraw money from her margin account)?