You Have an Urgent Transmission You Need to Make to the Dispatch

Multiple Choice

You have an urgent transmission you need to make to the dispatch center.Which of the following is the appropriate way to communicate this?

A) Interrupt less urgent radio traffic to get your message across.
B) Speak loudly to convey the urgency of the message.
C) Listen to the frequency first to avoid stepping on another transmission.
D) Use the phrase, "Attention, attention, I have priority traffic."