Which lock(s) will be taken when a device is being mapped to a Fibre Channel director on a Symmetrix

Which lock(s) will be taken when a device is being mapped to a Fibre Channel director on a
Symmetrix VMAX array?

A.
Front-end device and director locks

B.
Configuration lock

C.
Back-end device lock

D.
Front-end device and back-end device locks