46G3 B
 Which of the following statements is true?
A. You should always use the "INT" setting for calling a Public Correspondence station.
B. Using the "USA" setting changes certain channels from duplex to simplex operation.
C. You should use Ch-22 when calling the U. S. Coast Guard.
D. Using the "INT" setting will prevent proper Ch-13 Bridge-to-Bridge operations.
