Which statement is true regarding a Policy domain?

A.
A Policy domain has maximum two policy sets, and both have ACTIVE.
B.
A Policy domain has several policy sets, and all of the policy sets can be considered ACTIVE.
C.
A Policy domain has maximum two policy sets, and one is ACTIVE and the other is INACTIVE.
D.
A Policy domain can have several policy sets, but only one policy set can be considered ACTIVE.
Explanation: