单选题：In a demand-paging system, a process was allocated 4 frames, the

In a demand-paging system, a process was allocated 4 frames, the process has accessed page in following page number sequence, 2,0,2,9,3,4,2,8,2,3,8,4,5 and LRU algorithm is adopted. If the process is to visit the next page number 7, which page should be replaced ? @[B](1)
A. 2
B. 3
C. 4
D. 8




A.2
B.3
C.4
D.8


答案：B