Context: About an hour later , my phone rings . Apparently out of the three people that were at the store that have keys , two of them did not have a key to the cage , and the other person did not have his keys with him . And I was closest .

Question: Why did the writer 's phone ring ?
Options:
0. None of the above choices .
1. Because one person did n't have keys with him .
2. Because two people did not have a key to the cage .
3. Because he was being asked to unlock a door .
Answer: 3