What Are Characteristics of the File System Snapshot Copy Operation

What are characteristics of the file system Snapshot Copy operation?

A) Parent can only be a read-only Snapshot Copy will be a read-only Snapshot Has an independent Retention Policy from the parent
B) Parent can only be a read only Snapshot Copy will be a read/write Snapshot Inherits the parent Retention Policy
C) Parent can be a read-only or a read/write Snapshot
D) Parent can be a read-only or read/write snapshot