Following an incident in which a company's incident response plan (IRP) failed, the response team made several updates and changes to the IRP. The CEO wants to test the IRP with a realistic incident that allows for hands-on demonstrations without engaging in a full-blown simulation and that doesn't require extensive investment and planning. Which IRP exercise is the BEST option for this company? A.Training B.Tabletop Exercise C.Simulation D.Walkthrough