INLAND ONLY Passing signals shall be sounded on inland waters by __________.

A
all vessels upon sighting another vessel rounding a bend in the channel
B
towing vessel when meeting another towing vessel on a clear day with a 0.6 mile CPA (Closest Point of Approach)
C
a power-driven vessel when crossing less than half a mile ahead of another power-driven vessel
D
All of the above
E