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.