If an airplane circles a vessel 3 times, crosses the vessel's course close ahead while rocking the wings, and heads off in a certain direction, what does this indicate?

A
The plane is in distress and will have to ditch.
B
The plane is going to drop a package and wishes the vessel to recover it.
C
Someone is in distress in that direction and the vessel should follow and assist.
D
There is danger ahead and the best course is indicated by the direction of the aircraft.
E