| Concerning the operating mechanism of a controllable-pitch propeller, what statement is true? |
| A) If the hydraulic actuator is outboard, a mechanical pull-push rod is located within the propeller shaft. If the hydraulic actuator is inboard, hydraulic oil pipes are located within the propeller shaft. |
| B) If the hydraulic actuator is inboard or outboard, the blade rotating mechanism is actuated by a mechanical pull-push rod located within the propeller shaft. |
| C) If the hydraulic actuator is inboard or outboard, hydraulic oil pipes are located within the propeller shaft in either case. |
| D) If the hydraulic actuator is inboard, a mechanical pull-push rod is located within the propeller shaft. If the hydraulic actuator is outboard, hydraulic oil pipes are located within the propeller shaft. |
