(20 points] A trader entered a long position on a Bitcoin futures contract on September 3, 2019 with the futures price of $10,000 per Bitcoin. The futures contract matures in December, 2019 and each contract is for 5 Bitcoins. The initial margin is $50,000 and the maintenance margin is $37,500 per contract. The settlement prices for the Bitcoin futures on Sep. 3, 4 and 5 are $9,200, $ 7,830 and $ 6,500, respectively. Will there be an margin call for the trader after the market closes in those three days? If so, what is the margin call amount