Answer: D
Article 19 of the "Implementation Measures for the Financial Futures Investor Suitability System", the exchange conducts inspections on the implementation of the relevant requirements of the investor suitability system by futures company members During the inspection, futures company members shall cooperate and truthfully provide investors with account opening materials, capital account information and other information, and shall not conceal, obstruct or refuse. Therefore, the answer to this question is D.