A technician is troubleshooting a CD/DVD drive. There is a disk in the drive and the tray wont eject. Which of the following actions should the technician take FIRST？ （）

A.Shutdown， restart and verify that the BIOS recognizes the drive and try again.

B.Replace the CD/DVD drive.

C.Pry the tray open with a small， flat head screwdriver.

D.Place the end of a paper clip in the emergency eject pinhole on the CD/DVD drive.