Context: It was the Reebok 10 K marathon . I was 6 hours standing up , going from one place to the other , collecting tea / coffee cups , napkins , glasses , garbage , serving drinks . My feet are alright , though they hurt . My face ... oh god MY FACE !

Question: What may be the reason why their face hurts ?
Options:
0. They have a sunburn .
1. None of the above choices .
2. They were smiling so much .
3. They had an allergic reaction .
Answer: 0