单选题：Which one of the following statements is correct about spinlock?

Which one of the following statements is correct about spinlock?@[B](1)
A. Spinlock is appropriate for single-processor systems
B. Spinlock is often used in multiprocessor systems
C. Spinlock could be used in single-processor systems
D. Spinlock is not often used in multiprocessor systems





A.Spinlock is appropriate for single-processor systems
B.Spinlock is often used in multiprocessor systems
C.Spinlock could be used in single-processor systems
D.Spinlock is not often used in multiprocessor systems


答案：B