What are characteristics of the LUN Snapshot Copy operation?

What are characteristics of the LUN Snapshot Copy operation?
A . Parent cannot be a snapshot copy
Can only copy a detached snapshot
Has an independent Retention Policy from the parent
B . Parent can be a snapshot copy
Can only copy a detached snapshot
Has an independent Retention Policy from the parent
C . Parent can be a snapshot copy
Can copy an attached or detached snapshot
Inherits the parent Snapshot Retention Policy
D . Parent cannot be a snapshot copy
Can copy an attached or detached snapshot
Inherits the parent Snapshot Retention Policy

Answer: D

Explanation:

The Snapshot Copy operation will make a copy of an existing snapshot that is either attached or detached from a host. The copy will capture the existing data state of the snapshot it copies. In this Copy example, a copy of an existing 4 o clock snapshot is being made. The copy inherits the parent snapshot data state of 4 o clock and its retention policy