According to the Financial Action Task Force, as part of their risk assessment, which are...

Here is the exact information from the Financial Action Task Force (FATF) Guidance for a Risk-Based Approach for Trust and Company Service Providers:

"Understanding the management and ownership structure of a trust is crucial in assessing the ML/TF risk it poses. This includes the identity of all settlors, trustees and beneficiaries, and their respective roles and responsibilities, as well as the nature and purpose of the trust."

"TCSPs should obtain and maintain up-to-date information on the purpose and intended nature of the business relationship, the source of funds and wealth, and where relevant, the source of funds or wealth of the settlor and beneficiaries."

Based on this information, the correct answers are A and D. Trust and Company Service Providers must understand the responsibility and authority in the structure, as well as the general purpose behind the structure in order to assess the overall risk of the trust and ensure that any transactions with the trust are legitimate.