After this , another trip to the bar was needed and a quick purchase of a t - shirt - I ' m loving my concert t - shirts at the moment . Then it was back amongst the crowd to wait for Conor to appear . All of a sudden the Mystic Valley Band came on and then he appeared to a rapturous cheer .
According to the above context, choose the best option to answer the following question.
Question: Why is the group going to buy up some t shirts ?
Options:
- None of the above choices .
 - To commemorate the sports match .
 - To commemorate the event .
 - To commemorate the bar mitzvah .


To commemorate the event .