A user is present when a technician is troubleshooting their workstation. They insist on showing the technician, step by step, what occurred. How should the technician deal with this situation? （）

• A、Allow the user to demonstrate expertise.
• B、Do not argue; empathize with the user, and offer to help.
• C、Ask the user to watch as the technician diagnoses and corrects the problem.
• D、Document each of the steps to replicate at a later time.