A help desk technician has been tasked with installing an IP phone in a small office with an unmanaged switch.
When connected to an RJ45 receptacle, the phone does not boot. Which of the following is the QUICKEST way to resolve this issue?


A. Upgrade the Ethernet cable to the latest specification.
B. Replace the phone.
C. Install a PoE injector.
D. Change ports on the switch.