![](https://cos-cdn.shuashuati.com/pipixue-web/2020-1231-2005-12/ti_inject-812ce.png)
As the designated rudder angle is being achieved, as a result of the original command input, the steering gear follow-up mechanism is ______.
A.
in motion, providing a null input
B.
not in motion, thus providing a null input
C.
in motion, providing an input to place the main pump on maximum stroke
D.
in motion, providing an input to place the main pump at null stroke