1. A powerplant using a hydraulically controlled constant- speed propeller is operating within the propeller’s constant-speed range at a fixed throttle setting. If the tension of the propeller governor control spring (speeder spring) is reduced by movement of the cockpit propeller control, the propeller blade angle will A. increase, engine manifold pressure will increase, and engine RPM will decrease. B. decrease, engine manifold pressure will increase, and engine RPM will decrease. C. decrease, engine manifold pressure will decrease, and engine RPM will increase.