Context: He had been sitting in the car for a while waiting for us and listening to the radio . When he went to start his car the battery was dead . So we decided to take my car over there instead . I always hate having to park the car somewhere because then I have to worry is someone going to notice it or is it going to get towed or whatever .

Question: What may be the reason the battery was dead ?
Options:
0. They forgot to turn on the engine and the radio drained the battery .
1. They just bought the battery brand new but forgot to plug it in .
2. None of the above choices .
3. The weather was cold outside and they forgot to remove the battery .
Answer: 0