B. Incident Command
According to my research on different ICS facilities, I can say that based on the information provided within the question the role or group that is in charge of this is called the Incident Command. This is a group that is in charge of organization and making decisions based on the incident size and complexity.
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Depending upon the size of incidence and intricacy, the different kinds of support facilities may be established by Incident Command. These designated facilities generally comprise:
1. Incident base, camps, and staging regions
2. Incident command post
3. Point of distribution
4. Mass casualty triage regions
5. Emergency shelters