Context: When I was at work last night , I found a message on my voicemail . It was from my son 's bus driver ! I had made up a bunch of business cards for Nathan last year , that stated that he has autism , and here are some things to be aware of ( like not to touch him , he has trouble communicating when he is upset or frustrated , etc . ) I ' ve asked Nathan to give these cards to any new bus driver he has , and to substitute teachers , and to daycare people .

Question: Why would the bus driver have called and left me a voicemail ?
Options:
0. To get more information on understand Nathan 's condition .
1. None of the above choices .
2. He wanted to call me and tell me that he could n't drive someone with this condition .
3. He wanted to complain about Nathan and his poor behavior .
Answer: 0