39. Which is true?　
(A)　We can visit the museum for nine hours a day.　
(B)　If we want to know more about the museum, we can only make a call.
(C)　Sharon lives in Meinong, so she doesn’t need to pay for the ticket.　
(D)　Both my grandparents are seventy. If I take them to the museum, I need to pay NT$80for their tickets.