Besides Consideration of All of the Other Principles, in Deciding

Besides consideration of all of the other principles, in deciding whether to provide specific services, which of the following is also required by the Scope and Nature of Services principle:

A) Determine that the requested service is not currently being provided by any other professional.
B) Determine whether any service requested of an audit client would create reasonable assurance.
C) Practice only in a firm that has implemented internal quality control procedures.
D) Assess whether the requested service is in conflict with the role of a professional.
E) Determine whether any service requested of a consulting client would create a conflict of interest.