Context: This means that during the winter I must select either the floor / defrost mix , or the vent position , both of which work as intended . I ' ve managed to survive two upstate NY winters with the heater in this state of disrepair . It requires next to no maintenance , and what it requires does n't cost very much .

Question: what is the sort of " heater " that has defrost on it ?
Options:
0. It is a special personal warmer for office use .
1. It is a payne heater .
2. None of the above choices .
3. It is the heater in a car .
Answer: 3

Question: what is the sort of " heater " that has defrost on it ?
Options:
0. None of the above choices .
1. It is a special personal warmer for office use .
2. It is the heating system in an automobile .
3. It is a payne heater .
Answer: 2