Context: It was an accidental nap , but the episode of CSI that was on is one I \' ve seen and it did n\'t keep my interest . So I napped for about 3 hours . I did n\'t feel the frantic " Ca n\'t sleep because I \'ll be missing something " . Instead I just felt relaxed and comfortable . After nap it was just about evening so I gussied up and sallied forth to see and enjoy .
Question: What is meant by " accidental nap " ?
Option 0: I was feeling sleepy and felt I would have an accident .
Option 1: I was driving and fell asleep while driving .
Option 2: The nap was unplanned but I was tired .
Option 3: None of the above choices .
Answer: 2