According to the Measures for the Implementation of Financial Futures Investor Suitability System, before applying for opening financial futures trading codes, individual investors need to be comprehensively evaluated by members of futures companies in terms of investors' basic knowledge, financial status, futures investment experience and credit status. The specific conditions are as follows: (1) When applying for opening an account, the balance of available funds in the margin account shall not be less than RMB 500,000; (2) Having basic knowledge of financial futures and passing relevant tests; (3) Accumulated 10 trading days, more than 20 simulated financial futures transactions, or accumulated 10 futures transactions in the last three years: (4) No serious bad credit record; (5) No laws, administrative regulations, rules or business rules of the exchange prohibit or restrict financial futures trading. So the answer to this question is BC.