Refer to the exhibit.An engineer is troubleshooting this video conference issue: -A video call between a Cisco 9971 in Region1 and another Cisco 9971 in Region1 works. -As soon as the Cisco 9971 in Region1 conferences in a Cisco 8945 in Region2, the Region1 endpoint cannot see the Region2 endpoint video. What is the cause of this issue?

A. Cisco 8945 does not have a camera connected. B. Maximum Audio Bit Rate must be increased. C. Maximum Session Bit Rate for Video Calls is too low. D. Maximum Session Bit Rate for Immersive Video Calls is too low.