单选题：If a system use the banker’s algorithm to avoid deadlock, which

If a system use the banker’s algorithm to avoid deadlock, which of the following statement is correct?@[B](1)
A. If the system is in an unsafe state, it must cause a deadlock.
B. If the system is in an unsafe state, it may cause a deadlock.
C. If the system is in a safe state, it may cause a deadlock.
D. If the system is in a safe state, it must cause a deadlock.




A.If the system is in an unsafe state, it must cause a deadlock.
B.If the system is in an unsafe state, it may cause a deadlock.
C.If the system is in a safe state, it may cause a deadlock.
D.If the system is in a safe state, it must cause a deadlock.


答案：B