Today I went to the " Yamaka My Weekend " festival . While I was there , Casey and I ran into somebody we knew from junior high . Her name is Sarah .
According to the above context, choose the best option to answer the following question.
Question: Why is the narrator feeling nostalgic after going to the concert ?
Options:
- The narrator saw an old teacher there .
 - The narrator saw an old classmate there .
 - None of the above choices .
 - The narrator saw an old teammate there .


The narrator saw an old classmate there .