Context: It 's great to be back , but I 'd forgotten how bad the air quality is here . I had n't had allergies at all in NM , but now my eyes are itchy and I ' m sneezing and sniffling most of the time . Bleh . Things Iris has said lately : I : " Having dog . "

Question: Why have I forgotten how bad the air quality is ?
Options:
0. Because Iris has said lately : I : " Having dog . "
1. Because I 've been away for a while .
2. Because I was in NM .
3. Because it 's great to be back .
Answer: 1