A customer opened a ticket with the help desk two days ago to report that their computer ismaking a strange loud noise. Which of the following should the technician do FIRST after arriving at the site?（）

• A、Ask another technician who has worked with this computer previously to learn about any other prior issues.
• B、Ask the customer open-ended questions to attempt to narrow down the issue, then repeat the issue to the customer for validation.
• C、Ask the customer close-ended questions to attempt to narrow down the issue while not using technical jargon to avoid overwhelming the customer.
• D、Run preliminary diagnostic tests to narrow down the issue and update the status of the trouble ticket then ask the customer about any changes they have made to the computer.