题目内容：
根据下面内容，回答题： Student Volunteers Needed!
On Saturday,December 12th,from 10 A. M. until 4 P. M., Carverton Middle School will be holding a music festival in the school gymnasium.The special event will feature a variety of professional musicians and singers.
Interested students should speak with Ms. Braxton,the music teacher. Students who would like to help at the festival must have written permission from a parent or guardian.
What time will the festival begin? A．10A. M.
B．11A.M.
C．1P.M.
D．2P. M.
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答案解析：