Synchronous towing means that the __________.

A
tug is on the crest of a wave while the tow is in the trough
B
tug is in the trough while the tow is riding on the crest of a wave
C
tug and tow are both in the same relative position on different waves at the same time
D
port and starboard engines on the tug are turning at the same RPM
E