Calculated by interest rate futures, a contract 1 000,000, the price is 94.29 (three-month period), and the price is (100-(100-94.29)/4) *10,000. Similarly, the price of 92.40 is 98 1 000; This topic is sold at a high price (985725) and bought at a low price (98 1 000), so the profit and loss is judged as profit. The first profit is 985725-98 1000 = 4725, and the tenth profit is 47250. Choose A.

Calculation after proficiency (94.29-92.40)/4 * 10000 * 10 = 47250, (one point10000, total10 contracts).