【单选题】

Student: ______. Librarian: Sure, it's open from 9 a.m. to 6 p.m. Monday through Thursday, 9 a.m. to noon on Friday and closed on Saturday and Sunday.
A．Excuse me, could you please tell me the library hours for the holiday

B．Please do me a favor. When is the library open
C．Hello, can I check in these books now
D．Tell me, when are these books due