On Nov 1st you sell 2 futures contracts, each for 100 ounces of gold, at $1,500 an ounce. Your initial margin is set at 7.5% of the contract value (=7.5%$1500100) and the maintenance margin is $10,000 per contract. The settlement prices for gold on the subsequent days are shown in the table below. a. Show the "marking-to-market" and the adjustment in the margin account at the end of each day. b. What is the total 4 -day gain or loss on the position