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By ___, a block whose least recent use has been removed from the buffer and written to the disk

15. By ___, a block whose least recent use has been removed from the buffer and written to the disk.

1. LUR
2. LRU
3. RUL
4. RLU

Answer: B) LRU

Explanation:

By LRU, a block whose least recent use has been removed from the buffer and written to the disk.