10. A trader enters into a short position of 20 futures contracts at an initial futures price of $85.00. Initial margin, per contract, is $7.50. Maintenance margin, per contract, is $7.00. Each contract is for one unit of the underlying asset. Over the next three days, the contract settles at $86.00, $84.25, and $85.50, respectively. Assuming the trader does not withdraw any funds from his margin account during the period, but does post variation margin sufficient to meet any margin calls, the balance in the margin account will be: $140.00 at initiation and $150.00 at settlement on Day 3. b. $150.00 at initiation and $150.00 at settlement on Day 3. c. $150.00 at initiation and $160.00 at settlement on Day 3 a