Explanation: Security controls are safeguards or countermeasures to avoid, counteract, or minimize security risks. The following are the types of security controls for information systems, that can be employed by an organization: 1.System-specific controls: These types of security controls provide security capability for a particular information system only. 2.Common controls: These types of security controls provide security capability for multiple information systems. 3.Hybrid controls: These types of security controls have features of both system-specific and common controls. Answer: C is incorrect. It is an invalid control.