Which of the following is a facilitated tabletop exercise that is run in odd years...

GridEx (C) is a major, biennial cybersecurity exercise coordinated by the North American Electric Reliability Corporation (NERC) and other stakeholders. It typically occurs in odd years and involves multiple entities from across the grid, simulating large-scale cyber and physical attacks.

GridEx exercises culminate in a public Lessons Learned report to improve preparedness.

CRPA (A) and CTEP (D) are different programs/exercises, and E-ISAC (B) is the Electricity Information Sharing and Analysis Center, not an exercise.

GICSP recognizes GridEx as a critical event for testing incident response capabilities in ICS sectors.