Which of the following situation would not impair audit objectivity? 

An auditor is assigned to audit a business function that the auditor was responsible for nine months ago 

An individual temporarily assigned to the internal audit activity because of the individual’s expert knowledge in a particular business function assigned to audit an activity that the individual was responsible for just prior to transferring to the internal audit activity 

An auditor is assigned to perform a post-implementation review on a system for which the auditor participated in the design process 

An auditor is assigned to perform a post-implementation review on a system for which the auditor performed a procedure review and made control recommendations prior to the system’s implementation