An administrator is tasked with increasing the size of the volume /dev/vg/lv to 20GB. Which of the following BEST illustrates the steps the administrator should take?
A. vgextend -L20G /dev/vg/lv; resizelv /dev/vg/lv
B. parted -L20G /dev/vg/lv; remount /dev/vg/lv
C. mkfs -L20G /dev/vg/lv; tune2fs /dev/vg/lv
D. lvextend -L20G /dev/vg/lv; resize2fs /dev/vg/lv
