Choice "A" is correct. A CPA cannot render an opinion on financial statements unless he or she has obtained sufficient appropriate audit evidence supporting that opinion. If such evidence were unlikely to be available, the CPA would most likely reject the potential audit engagement.
Choice "c" is incorrect. The auditor takes the availability of information into account when planning the audit, and would need to perform testing throughout the period, but this would not be cause for rejecting a potential audit engagement.
Choice "d" is incorrect. The risk of management override is considered during planning and would not be cause for rejecting a potential audit engagement.
Choice "b" is incorrect. Management may consult with several accounting firms, and this would not be cause for rejecting a potential audit engagement.
