Article 46 of the Measures for the Administration of Private Equity Asset Management Business of Securities and Futures Operating Institutions stipulates that securities and futures operating institutions shall earnestly perform their active management duties and shall not engage in the following acts: ① provide channel services for other institutions, individuals or asset management products, and avoid regulatory requirements such as investment scope and leverage constraints. ② The asset management contract stipulates that the customer or the third party designated by the customer shall be responsible for due diligence or investment operation. ③ It is stipulated in the asset management contract that the client or a third party designated by the client issues investment instructions or provides investment advice. The asset management contract stipulates that the manager shall exercise the rights of the securities held in the asset management plan according to the opinions of the client or the third person designated by him. Option a, option b, option c and option d are all correct.