E1B04 - Amateur Extra Class

E1B04 : What must the control operator of a repeater operating in the 70-centimeter band do if a radiolocation system experiences interference from that repeater?
A Reduce the repeater antenna HAAT (Height Above Average Terrain)
B File an FAA NOTAM (Notice to Air Missions) with the repeater system's ERP, call sign, and six-character grid locator
C Cease operation or make changes to the repeater that mitigate the interference
D All these choices are correct
Correct Answer: Cease operation or make changes to the repeater that mitigate the interference