The S&P 500 index is currently at 2,000, and the margin requirement on its futures contract is 10%, and . The multiplier for S&P 500 futures is $50. a. How much margin will be needed for each contract?

b. If the futures price falls by 1% to 1,980, what will happen to the margin account of an investor who holds one contract? (Input the amount as a positive value.)

c-1. What will be the investor's percentage return based on the amount put up as margin? (Negative value should be indicated by a minus sign.)

c-2. What would be the current cash balance in the margin account?