Which of the following commands could be used to convert the ext2 file system on /dev/hda2 to use the ext3 file system?

Which of the following commands could be used to convert the ext2 file system on /dev/hda2 to use the ext3 file system?

A.
mkfs -t ext3 -j /dev/hda2

B.
e2label -t ext3 /dev/hda2

C.
tune2fs -j /dev/hda2

D.
e2image -j /dev/hda2