题目:When the guest asks about the announcements of baby-sitting service, we can say:____.
A. You can look the announcement on the table.
B. Guests should inform the hotel three hours in advance if the hotel provides baby-sitting service. The guest also need to fill in the application form for baby-sitting service.
C. I don't realize the detail information.
D. There are some spare time babysitters directly under the Room Center.
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