单选题：When ____________, the process changes from running state to rea

When ____________, the process changes from running state to ready state.@[B](1)
A. the process is selected by the scheduling procedure
B. the time slice is over
C. the process is waiting for an event
D. the event that the process is waiting for occurs



A.the process is selected by the scheduling procedure
B.the time slice is over
C.the process is waiting for an event
D.the event that the process is waiting for occurs


答案：B