I was with a big smile when I tried to go sleep . But the excitement that I already have Acer Aspire One kept me awake . I tried different ways to fall asleep , but I could n't .
Why ca n't the speaker go to sleep ?
Pick the best answer from the following options:
A. Their mouth hurts .
B. They are excited .
C. They have too much work to do .
D. They are scared .


B