E1B10: What frequencies are authorized to an amateur station operating under RACES rules?

Direct answer summary (2024-2028 NCVEC pool)

The official correct answer for E1B10 is All amateur service frequencies authorized to the control operator.

The key fact is All amateur service frequencies authorized to the control operator. Match that fact to the exact condition in the question; the other choices describe a different rule, band, component, or operating situation.