Final answer:
CPAs can change their report on prior years' financial statements if errors are identified and corrected, ensuring the accuracy and integrity of the financial information. It is crucial that these changes are accompanied by proper disclosure to stakeholders.
Step-by-step explanation:
The question is asking whether Certified Public Accountants (CPAs) can change their report on prior years' financial statements when they are attesting to comparative financial statements. The correct answer is a) Yes, if errors are identified and corrected. If errors are discovered in the previously issued financial statements, the CPAs must review these errors and, if necessary, reissue the prior year's report to reflect the corrected information. This ensures that the financial statements are presented fairly in all material respects and are in conformity with the applicable financial reporting framework. Moreover, this change should come with proper disclosure, informing all relevant stakeholders of the nature of the errors and the changes made in the revised report.