What statements are TRUE regarding retrospective audits?

The correct statement regarding retrospective audits is that they can be performed by external consultants who sign a business agreement. This process often involves third-party experts who bring specialized knowledge and experience to evaluate the data and methodologies used in the audit. Engaging external consultants can enhance the objectivity and thoroughness of the audit process, providing a fresh perspective and helping to identify potential areas for improvement in data handling and reporting.

Retrospective audits specifically focus on assessing data and actions after the submission has occurred. This implies that internal employees may conduct audits as well, but this option doesn't capture the crucial aspect of the independence provided by engaging external consultants under a formal agreement. Furthermore, such audits take place after data submission to validate the accuracy of reported data and ensure compliance with applicable standards. Therefore, selecting the option that highlights the involvement of external consultants properly emphasizes the nature and benefits associated with retrospective audits.