A user reports that a local ink jet printer is not printing. The user has a signed driver, the printers hardware is working, ink is full, print heads are clean, and the printer is connected correctly via USB. The print queue has 20 documents waiting for the printer. Which of the following is MOST likely the cause of the problem?

A.
There is insufficient memory installed in the printer.

B.
The printer is set to offline mode in Windows XP.

C.
Windows firewall is blocking packets being sent to the printer.

D.
The print head has failed.