Select the correct option below which best describes the concept of validation of an overpayment.
I. Validation of an overpayment is necessary to ensure the correctness of the overpayment.
II. Validation can happen once the overpayment recovery is done.
III. Claim, member and provider data is necessary for investigating the validation of the overpayment.
IV. Validation of overpayment is not at all required.