After booting up a new computer， a technician observes that the USB ports are not working with any USB devices. Which of the following should be done FIRST？（）

• A、Check the computer to verify that the jumper settings for USB are correct.
• B、Connect the USB devices to a different computer to test the devices.
• C、Buy new USB wires and test USB functionality.
• D、Check the BIOS to verify that USB functionality is enabled.