Which action is not an option for adding Virtual Machines to a Security Group?

Which action is not an option for adding Virtual Machines to a Security Group?

A.
Adding Virtual Machines to a Security Group and nesting it within another Security
Group.

B.
Defining Dynamic Membership in the Security Group.

C.
Adding Virtual Machines to a Security Policy and associating it with a Security Group.

D.
Selecting objects to include within a Security Group.