What are the advantages of creating the approver as a group instead of a user?

You are configuring an approval task in a template. There is only one approver for the task .

What are the advantages of creating the approver as a group instead of a user?
A . Ease of administration-it is easier to add/remove users from group than it is to change the task
B . Future proofing you may want to have multiple approves in future
C . Notifications: You can only configure the notifications for groups not for users
D . Delegation: User cannot delegate approval tasks to others unless they are in the same group

Answer: A,B