The knowledge point to be investigated in analyzing this problem is the institutional setup of fund management companies-investment decision-making committees. The investment decision-making committee is the highest decision-making body for fund management companies to manage fund investment, and it is a non-permanent deliberative body. Under the premise of abiding by the relevant national laws, regulations and rules, it has the highest decision-making power on the investment affairs of the managed funds. So, the answer to this question is D.