2. Suppose that you enter into a short futures contract to sell July silver for $17.20 per ounce. The size of the contract is 5,000 ounces. The initial margin is $4,000, and the maintenance margin is $3,000. What change in the futures price will lead to a margin call? 0. b. What happens if you do not meet the margin call? C. Under what circumstances could $2,000 be withdrawn from the margin account