The knowledge point to be investigated in analyzing this problem is the internal control of the company. The internal control mechanism of fund management companies generally includes four levels: first, employee self-discipline; The second is the inspection and supervision of the heads of departments at all levels; Third, the general manager of the company and the supervision and audit department under his leadership supervise and control all departments and businesses; The fourth is the inspection, supervision, control and guidance of the audit Committee and the inspector general under the leadership of the board of directors. So the answer to this question is ABCD.