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How to calculate the current equity and available fund balance of stock index futures? There are examples to find the calculation process.
Choose C.

20 hands *(52 15-5200)*300=90000

20 hands *(52 10-5200)*300=60000.

40 hands * 100=4000

After closing, the total account amount is 5000000+90000+60000-4000 = 5146000 (RMB).

The remaining fund balance is 514600-20 * 5210 *15% * 300 = 4061000 (yuan).