After Deleting a Few Files When a User Complains of a Slow

Multiple Choice

After deleting a few files when a user complains of a slow boot problem,the user calls in another problem with the same complaint.When the technician comes by,the technician tells the user that he fixed that problem.What operational procedure is the technician failing to meet?

A) Avoiding arguing with the customer
B) Documenting and providing feedback
C) Dismissing a customer problem
D) Disclosing experiences via social media outlets