According to Article 33 of the Regulations on the Administration of Futures Trading, the settlement of futures trading is organized by the futures exchange. The futures exchange shall implement the debt-free settlement system on the same day. The futures exchange shall promptly notify the members of the settlement results on the same day. A futures company shall settle accounts with customers according to the settlement results of the futures exchange, and notify customers of the settlement results in a timely manner in the manner agreed with customers. Customers should promptly inquire about and properly handle their trading positions. If the stem requirement is wrong, choose B.