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、Askanothertechnicianwhohasworkedwiththiscomputerpreviouslytolearnaboutanyotherpriorissues.
B、Askthecustomeropen-endedquestionstoattempttonarrowdowntheissue,thenrepeattheissuetothecustomerforvalidation.
C、Askthec