Context: I ' m so exhausted ! Last night we were sitting on our couch at 8 pm . We had just started saying how nice it was that we could enjoy the evening with both kids sleeping bed .
Question: What is the reason I am so exhausted ?
Option 0: I did n't go to sleep until 8 pm .
Option 1: The kids kept me up all night so I could n't sleep .
Option 2: I fell asleep on the couch instead of bed .
Option 3: I stayed up too long after the kids went to bed .
Answer: 3