【单选题】

Student: ______.Librarian: Sure, it' s open from 9:00 a.m. to 6:00 p.m. Monday through Thursday, 9:00 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