Which command creates a defragmented copy of a user disk volume?

A.
BACKUP /IMAGE$1$DGA11: $1$DGA21:

B.
BACKUP /IMAGE $1 $DGA11 :*.* $1 $DGA21 :*.*

C.
BACKUP /PHYSICAL $ 1$DGA1 1 :*.* $ 1$DGA21 :*.*

D.
BACKUP /IMAGE /PHYSICAL $1 $DGA11: $1 $DGA21: