7-94J4 C
 The sequence ARQ, FEC, SFEC best corresponds to which of the following sequences?
A. One-way communications to a single station, one-way communications to all stations, two-way communications.
B. One-way communications to all stations, two-way communications, one-way communications to a single station.
C. Two-way communications, one-way communications to all stations, one-way communications to a single station.
D. Two-way communications, One-way communications to a single station, One-way communications to all stations.
