Answer: A

Analysis The relationship between fund unit holders and the custodian is that of entrustment and fiduciary, that is, the fund unit holders entrust the fund assets to the fund custodian for safekeeping. . For holders, entrusting fund assets to specialized institutions for safekeeping can ensure the safety of fund assets. For fund custodians, they must be responsible to fund share holders, supervise the behavior of fund managers, make business operations comply with the requirements of laws and regulations, work diligently for the benefit of fund share holders, ensure asset safety, and improve assets. of remuneration.