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.