88J5 D
 The purpose of "parity" in SITOR (NBDP) communications is?
A. Error correction in HF BFEC MSI broadcasts, SFEC NAVTEX broadcasts and two way ARQ exchanges.
B. Error correction in SFEC NAVTEX broadcasts, HF SFEC MSI broadcasts and two-way ARQ exchanges.
C. Error correction in BFEC NAVTEX broadcasts, HF BFEC MSI broadcasts and one-way ARQ broadcasts.
D. Error correction in HF BFEC MSI broadcasts, NAVTEX broadcasts and two-way ARQ exchanges.
