Answer:
The correct answer is letter "C": Offer to make the changes to the product and explain to your supervisor what happened.
Explanation:
In front of every problematic situation, a solution must be offered beforehand. If the other party is alleging were are guilty of something, we must review what or role in the situation was to confirm if we did what we were requested to do. Just like in the example, the guidelines we were hired for were met but the client replied stating they were not. In such a case, the whole situation must be explained to the supervisor in charge.