An administrator needs to apply

单项选择题 An administrator needs to apply a Technology Level update. During the preview install, the output indicates that there is insufficientspace in the /usr filesystem. Review of the root volume group indicates there are no available physical partitions, but the /test jfs2 filesystem is only 8% used. What is the most efficient method to use the available space in the /test filesystem to apply theupdate?（）: A、Use chfs to reduce the /test filesystem; B、Use cplv to copy the /test filesystem to a smaller logical volume; C、Use migratepv l to move the /test filesystem to a different volume group; D、Backup the /test filesystem, remove it, and recreate it with a smaller size

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