In a certain meeting, the meeting administrator sent a subtitle to the meeting. Some venue terminals can display this subtitle, and TE Subtitles are not displayed in all conference sites joined via Desktop. Which of the following is the possible reason?

In a certain meeting, the meeting administrator sent a subtitle to the meeting. Some venue terminals can display this subtitle, and TE Subtitles are not displayed in all conference sites joined via Desktop. Which of the following is the possible reason?
A . There is a fault in the video input interface of the terminal that cannot display subtitles.
B . The subtitle format sent by the conference administrator is T.140
C . The subtitle format sent by the conference administrator is non-T.140
D . The video output interface of the terminal that cannot display subtitles is faulty.

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Answer: B