A user who is unable to connect to the network submits a help desk ticket. The assigned help desk technician inquires about whether any recent changes have been made. The user reports there is construction activity in the surrounding offices. The help desk technician proceeds to ping the user's desktop, which does not respond.
Which of the following is the MOST likely cause of this issue?


A. A duplicate IP address has been issued to the user's desktop.
B. The HDD of the OS is failing.
C. The network cable has become disconnected.
D. Malware has infected the system.