During inspection of the flight control system of an airplane equipped with differential-type aileron control, side-to-side movement of the control stick will cause
选项：

A: each aileron to have a greater up travel (from the streamlined position) than down travel.
B: each aileron to have greater down travel (from the streamlined position) than up travel.
C: the left aileron to move through a greater number of degrees (from full up to full down) than the right aileron.