Question: When an OS utilizes a disk block cache, the blocks are divided into linked lists, such as Locked blocks, and lists sorted according to the

When an OS utilizes a disk block cache, the blocks are divided into linked lists, such as Locked blocks, and lists sorted according to the LRU (least recently used) policy. Where should a block be placed if used only once?
Group of answer choices
Rear of the LRU list
Front of the LRU list
List of Locked blocks
Free buffer list

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