Question: Given the reference string of page accesses: 1 2 3 4 2 3 4 1 2 1 1 3 1 3 and a system with

Given the reference string of page accesses: 12342341211313 and a system with three page frames, what is the final configuration of the three frames after the OPT algorithm is applied?
1,3,4
1,2,1
1,2,3
2,3,4

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