单选题：In the disk scheduling algorithm, which algorithm may change the

In the disk scheduling algorithm, which algorithm may change the arm’s movement direction at any moment?@[B](1)
A. C-SCAN
B. SSTF(shortest seek time first)
C. SCAN
D. none of the above





A.C-SCAN
B.SSTF(shortest seek time first)
C.SCAN
D.none of the above


答案：B