A user reports that a newly installed external CD-RW is not working. Jill, a technician, is called and notes the user has the CD-RW drive, a flash disk, a rarely used external hard drive and a wireless network adapter plugged into an external USB hub.<br /> Which of the following is the MOST likely reason for the problem?()<p> A user reports that a newly installed external CD-RW is not working. Jill, a technician, is called and notes the user has the CD-RW drive, a flash disk, a rarely used external hard drive and a wireless network adapter plugged into an external USB hub.<br /> Which of the following is the MOST likely reason for the problem?()</p>
A、A. The USB hub needs more USB ports.
B、B. The USB hub is a version 1.1.
C、C. The USB hub was not externally powered.
D、D. The USB hub is a version 2.0.