An auditor may provide an issuer client any of the following nonaudit services without impairing independence and without obtaining the preapproval of the audit committee, except:
A.
nonaudit services with revenues in aggregate of less than 5% of the total revenues paid by the issuer to the auditor during the fiscal year in which the nonaudit services are provided.
B.
nonaudit services that were promptly brought to the attention of, and approved by, the audit committee prior to the completion of the audit.
C.
nonaudit services to perform financial information systems design and implementation.
D.
services that the issuer did not recognize as nonaudit services at the time of the engagement.
You are correct, the answer is C.
Financial information systems design and implementation to an attestation client would impair independence. In addition, all nonaudit services, except those that fall under the de minimis exception, need to be preapproved by the audit committee.
The question says nothing about attest , but the explanation does. I guessed, but I'd like to know how I'm supposed to remember this.