Aster Retail's audit committee wants internal audit to provide a high level of confidence that the year-end revenue controls are operating effectively, and it has allocated ample time for extensive testing. Which type of engagement matches this request?
- AA reasonable assurance engagement, which performs more extensive procedures to support a positively expressed conclusion at a high though not absolute level of confidence. Correct
- BA limited assurance engagement, which performs reduced procedures and conveys a lower level of confidence through a negatively expressed conclusion.
- CAn advisory engagement, because testing controls at the audit committee's request is simply advice provided to the client on demand.
- DA reasonable assurance engagement, which guarantees the revenue controls are free from any deficiency because the testing was so extensive.
Why A is correct: Reasonable assurance uses deeper procedures to underpin a positively worded conclusion at a high but not absolute level of confidence, which is exactly what the committee has asked for and resourced.
Why B is wrong: Limited assurance is tempting shorthand for any controls review, but its reduced procedures and negative wording give lower confidence than the high assurance requested, so it does not fit.
Why C is wrong: Concluding on whether controls operate effectively for stakeholders is assurance, not advice; labelling it advisory misclassifies the service and is therefore wrong.
Why D is wrong: Reasonable assurance is high but not absolute, so promising a guarantee of no deficiency overstates what the engagement can deliver and makes this option incorrect.