单选题：If the current runlevel is 3, how can you change the system to r

If the current runlevel is 3, how can you change the system to runlevel 5 without rebooting the system?@[B](1)
A. Set level = 5
B. telinit 5
C. run 5
D. ALT-F7-5



A.Set level = 5
B.telinit 5
C.run 5
D.ALT-F7-5


答案：B