Context: 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 .

Question: Why is the narrator feeling nostalgic after going to the concert ?
Options:
0. The narrator saw an old teacher there .
1. The narrator saw an old classmate there .
2. None of the above choices .
3. The narrator saw an old teammate there .
Answer: 1