【单选题】

如果不安装校装销，当系统没有压力时升降舵会向下偏移。

A、If you do not secure the rigging pin, the elevators will descend when there is pressure in the system.
B、If you do not install the rigging pin, the elevators will move down when there is no pressure in the system.
C、Without the rigging pin installed, the elevators will not lower when there is no pressure in the system.