单选题：Supposed there are 10 processes in the ready queue, the system s

Supposed there are 10 processes in the ready queue, the system set the time slice to be 200ms, and it costs CPU about 10ms to switch from a process to another. The system’s overhead is approximately ____.@[B](1)
A. 1%
B. 5%
C. 10%
D. 20%




A.1%
B.5%
C.10%
D.20%


答案：B