Context: My sister and I are at work with our mom , and she 's painting some school a few towns away . My sister have been working on our summer reading since like six o'clock in this tiny classroom with a computer , which I hacked into , by the way , hehehehe . But yeah , we went to tell her something , and she said " Does n't it smell like fall outside ? "

Question: What is the possible reason for it smelling like fall outside ?
Options:
0. Because we went to tell her something .
1. None of the above choices .
2. Because it is the beginning of fall .
3. Because the writer and their sister are at work with our mom .
Answer: 2