单选题What command can be used to make all mountable filesystems available for use?（）Amount -aBautomount allCvaryonvg -m -aDrun the /etc/filesystems script
单选题
What command can be used to make all mountable filesystems available for use?（）
A
mount -a
B
automount all
C
varyonvg -m -a
D
run the /etc/filesystems script
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