Which word or phrase should be deleted? School starts at 8:00 A.M.in the morning and ends at 3:00 P.M.in the afternoon.

Which word or phrase should be deleted? School starts at 8:00 A.M.in the morning and ends at 3:00 P.M.in the afternoon.
A.school
B.in the morning; in the afternoon
C.starts
D.ends
正确答案：in the morning; in the afternoon