What communications framework should be established for NFPA 1403 evolutions?

What communications framework should be established for NFPA 1403 evolutions?

• A. A flexible, ad-hoc on-site communication approach with no defined roles.
• B. A defined on-site communications plan with clear roles and channels, without redundancy considerations.
• C. A defined on-site communications plan with clear roles, work channels, and a means to call for help, with redundancy ensured by the IIC.
• D. Communication only via whistle signals.

Answer: (C)