092F D
 Which of the following is true of SITOR ARQ mode:
a) The ship station sends a group of 3 characters twice and then waits for an "RQ" signal to indicate proper receipt before continuing transmission.
b) The Ship station sends each character twice, using a time diversity system to ensure proper parity.
c) The ship station sends a group of 3 characters, the shore station checks for proper parity and then requests the same group be resent to enable error correction.
d) The ship station sends a group of 3 characters, the shore station checks for proper parity. If parity is OK, the shore station indicates readiness for transmission of the next 3 characters.
