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 .
What is the reason I am so exhausted ?
Pick the best answer from the following options:
A. I did n't go to sleep until 8 pm .
B. The kids kept me up all night so I could n't sleep .
C. I fell asleep on the couch instead of bed .
D. I stayed up too long after the kids went to bed .


D