B. Carl doesn't score touchdowns very often.
The announcer says he can't believe that Carl James scored a touchdown. He also seems to think that Carl James has trouble believing the touchdown as well. Since the announcer does not say anything disparaging about Carl James, we know that he is not prejudiced against him. We also don't know if Carl James is popular with the crowd since the crowd's reaction is not mentioned. There is also nothing to indicate that the announcer is happy for Carl because there are no emotion words in the announcement.