单项选择题
A.On-ging B.Pending C.Run D.Closed
A.00：00-24：00 B.20：00-8：00 C.8：00-20：00 D.24：00-00：00
A.Closed On-ging Open Pending B.Run On-ging Open Closed C.Closed On-ging Open D.Closed cancel Openongoing