In the video clip, why is the blind man puzzled? A: Because few people seem to be willing to help. B: Because the reaction from the passers-by seems to have suddenly changed. C: Because a lady lingers for too long a time around him. D: Because somebody messes about with his cardboard sign.

‍In the video clip, why is the blind man puzzled?‌ A: Because few people seem to be willing to help. B: Because the reaction from the passers-by seems to have suddenly changed. C: Because a lady lingers for too long a time around him. D: Because somebody messes about with his cardboard sign.