What happens when a mirrored volume is converted to RAID-5?

A.
One plex is converted to RAID-5 and all other plexes are removed.

B.
The number of plexes converted depends on how many columns the RAID-5 volume
has.

C.
The number of plexes converted depends on the stripe unit size.

D.
All plexes of the mirrored volume are converted to RAID-5.