7-88J5 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.
