[单项选择]Student: ______. Librarian: Sure, it's open from 9 A. A.m. to 6 p.m. Monday through Thursday, 9a.m. to noon on Friday and closed on Saturday and Sunday. Excuse me, could you please tell me the library hours for the holidayB. Please do me a favor. When is the library openC. Hello, can I check in these books nowD. Tell me, when are these books due