039E B
 Which information determines if a NAVTEX message is to be rejected?
a) Transmitter identity (numerals from 1 to 26 identifying transmitting station within the  NAVAREA).
b) Subject indicator (single letter from A to Z indicating the type of message).
c) The Answerback of the receiving station has not been entered in the NAVTEX receiver.
d) Only messages having a serial number 00 are rejected.
