What is most likely the cause of this issue?

Your customer reports that new A/V equipment that plays movies cannot be displayed on their Cisco TelePresence endpoints. This A/V equipment is connected to the Cisco TelePresence codec via an HDMI cable. However, older A/V gear that uses composite cables is able to display content.

What is most likely the cause of this issue?
A . The composite cables are faulty.
B . TIP negotiation is failing between the A/V gear and the Cisco TelePresence device.
C . The A/V gear is using HDCP to prevent illegal copying.
D . The operating system for the A/V gear is not compatible with the operating system of the Cisco TelePresence device.

Answer: C