which Virtual Machines will be affected by the rule ?

If a Security Group is the Source for a General Logical Firewall Rule, which Virtual Machines will be affected by the rule ?

A.
Each Virtual Machine defined in the Security Group.

B.
Each Virtual Machine defined in the Source and Destination fields of the Logical Firewall Rule.

C.
Each Virtual Machine identified in the Applied To field of the Logical Firewall Rule.

D.
Each Virtual Machine identified in the Destination field of the Logical Firewall Rule