Correct answer: A.D.

Article 5 of the Measures for the Implementation of the Suitability System for Stock Index Futures Investors (Trial) stipulates that members of futures companies can only apply for opening stock index futures trading codes for general legal person investors who meet the following criteria: the net assets are not less than RMB 6,543,800+0,000. When applying for opening an account, the balance of available funds in the margin account shall not be less than RMB 500,000. There are corresponding decision-making mechanisms and operational procedures. Relevant business personnel have basic knowledge of stock index futures and passed relevant tests; It has a record of 10 trading days and more than 20 stock index futures simulation transactions; Or commodity futures trading with 10 or above in the last three years. No serious bad credit record; There are no laws, administrative regulations, rules and business rules of the exchange to prohibit or restrict the trading of stock index futures.