What command is used to re-add a partition to a software RAID setup?

What command is used to re-add a partition to a software RAID setup?

A.
raidhotadd

B.
raidadd

C.
addraid

D.
raidaddhot

Explanation:
: raidhotadd command is used to add the new disk on RAID array or as a RAID spare disk.
Example: raidhotadd /dev/hda13 /dev/md0