Which of the following applies when two stations transmitting on the same frequency interfere with each other?

In amateur radio, nobody owns a specific frequency, and FCC rules dictate that all frequencies are shared. Because there are no preemptive rights for being on a frequency first, operators must cooperate. When interference occurs, the correct and courteous action is to negotiate the continued use of the frequency with the other station. While moving to another frequency might be a practical outcome of that negotiation, the rules emphasize communication and mutual agreement rather than strict mandates. Using subaudible tones (CTCSS/DCS) is also incorrect here; tones only mute your radio's speaker to hide the interference, but the radio signals will still collide over the air.