The initial margin for NYMEX May natural gas futures is $2500. The maintenance margin level is $1800. At the beginning of the day, you were short 1 NG futures contract, and you had $2000 in your margin account. Today, the NG price rises $.10/MMBTU. (Each NG futures contract is for 10,000 MMBTU). a. How much money is in your Margin account at the end of the day? b. Will you receive a margin call? c. How much margin money must you pay before trading opens tomorrow?