If there is a fire in a hold, what should you do?（）

A. Close the hatch, accesses and ventilators at once. Flood CO₂ into hold.
B. Open the hatch, accesses and ventilators at once. Flood CO₂ into hold.
C. Close the hatch, accesses and ventilators at once. Flood water into hold.
D. Open the hatch, accesses and ventilators at once. Flood water into hold.