An Auditor Is About to Commence a Recurring Annual Audit

An auditor is about to commence a recurring annual audit engagement. The continuing auditor's independence would ordinarily be considered to be impaired if the prior year's audit fee

A) Was unusually large.
B) Has not been paid and will not be paid for at least twelve months.
C) Has not been paid and the client has filed a voluntary petition for bankruptcy.
D) Was renegotiated during the prior year audit based on the need for expanded testing.