According to the passage, computer science can only reveal ______.

A．They call out the names of players in their cheers.
B．They jump and dance and shout for their team.
C．They wear clothes of a bright color.
D．They come from a special club.

A．The man was fined.
B．The man got a ticket to the cinema.
C．The man has a poor eyesight.
D．The woman wanted to know where the man got his ticket.