Which restrictions on cascaded storage groups on Symmetrix storage arrays running Enginuity
5876 are correct?

A.
Parent may have up to 32 children, child may only be contained by a single parent.

B.
FAST can be associated with Parent, SGs can only contain devices or other SGs.

C.
Masking is permitted for child and parent, only a single level of cascading is permitted.

D.
Parent may be a child of another SG, SGs can contain both devices and other SGs.

Explanation: