092A C
 Which of the following statements concerning SITOR communications is true?
a) In ARQ, each character is transmitted twice, about 250 milliseconds apart.
b) In ARQ, the "information sending station" transmits a block of three characters twice, about 250 milliseconds apart.
c) In ARQ, the "information sending station" will transmit a block of three characters that the receiving station will subsequently acknowledge or request be retransmitted.
d) SITOR communications can be used to contact a NAVTEX transmitting station when requesting a repeat transmission of a missed NAVTEX message.
