If a Huawei TE series terminal is used for point-to-point calls and the video-related configurations are set to "Auto", which of the following descriptions is correct?

If a Huawei TE series terminal is used for point-to-point calls and the video-related configurations are set to "Auto", which of the following descriptions is correct?
A . If the bandwidth is sufficient, 1080P60 format is preferred for the main video.
B . If the bandwidth is sufficient, 1080P30 format is preferred for the main video.
C . If the bandwidth is sufficient, 720P60 format is preferred for the main video.
D . If the bandwidth is sufficient, 720P30 format is preferred for the main video.

Answer: A