Consider the virtual page reference string: 1, 2, 3, 2, 4, 1, 3, 2, 4, 1 On a demand paged virtual memory system running on a computer system that has main memory size of 3 page frames which are initially empty. Let LRU FIFO and OPTIMAL denote the number of page faults under the corresponding page replacement policy. Then,

Consider the virtual page reference string: 1, 2, 3, 2, 4, 1, 3, 2, 4,

1.	Consider the virtual page reference string: 1, 2, 3, 2, 4, 1, 3, 2, 4, 1 On a demand paged virtual memory system running on a computer system that has main memory size of 3 page frames which are initially empty. Let LRU FIFO and OPTIMAL denote the number of page faults under the corresponding page replacement policy. Then,
A.	OPTIMAL < LRU < FIFO
B.	OPTIMAL < FIFO < LRU
C.	OPTIMAL = LRU
D.	OPTIMAL = FIFO
Answer» C. OPTIMAL = LRU

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