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 .
According to the above context, choose the best option to answer the following question.
Question: Why did the writer 's phone ring ?
Options:
- None of the above choices .
 - Because one person did n't have keys with him .
 - Because two people did not have a key to the cage .
 - Because he was being asked to unlock a door .


Because he was being asked to unlock a door .