During a recent self-inspection audit I was written up because we exercised an option unilaterally, included the new wage determination, and 'only' used the authority of 52.217-9. Her opinion was that the option clause only authorized exercising the option, it does not also include updating a wage determination and in order to add it/replace the old one, you'd need to have another authority. I have NEVER seen a unilateral option mod that incorporates a revised WD cite any other authority than 52.217-9, so I don't agree with her. However, I can't find the right verbiage in the FAR. Curious if someone with more time under his/her belt can give me a better explanation of why 52.217-9 is sufficient (or why she's right). Thanks!