A large vessel is equipped with a controllable pitch propeller. Which statement is TRUE?

A
When dead in the water, it is often difficult to find the neutral position and slight headway or sternway may result.
B
When going directly from full ahead to full astern, there is complete steering control.
C
When the vessel has headway and the propeller is in neutral, there is no effect on rudder control.
D
When maneuvering in port, full ahead or astern power can usually be obtained without changing shaft RPM.
E