Context: John was in the fertilized egg business . He had several hundred young laying hens , called " pullets " , and ten roosters to fertilize the eggs . He kept records , and any rooster not performing went into the soup pot and was replaced . This took a lot of time , so he bought some tiny bells and attached them to his roosters .

Question: Where does John work ?
Options:
0. An in vitro fertility clinic .
1. At an animal hospital .
2. None of the above choices .
3. In agriculture .
Answer: 3