Which command will create an ext3 filesystem on /dev/hda2?

A.
/sbin/mke2fs -d /dev/hda2

B.
/sbin/mke2fs -j /dev/hda2

C.
/sbin/mke2fs -m 3 /dev/hda2

D.
/sbin/mke2fs -c ext3 /dev/hda2

Explanation:

mke2fs – create an ext2/ext3 filesystem -j Create the filesystem with an ext3 journal. If the -j option
is not specified, the default journal parameters will be used to create an appropriately sized journal
(given the size of the filesystem ) stored within the filesystem . Note that you must be using a
kernel, which has ext3 support in order to actually make use of the journal.