A full-authority electronic engine control (EEC) is a system that receives all the necessary data for engine operation and(　　)

A、—adjustsastandardhydromechanicalfuelcontrolunittoobtainthemosteffectiveengineoperation.
B、—developsthecommandstovariousactuatorstocontrolengineparameters.
C、—controlsengineoperationaccordingtoambienttemperature,pressure,andhumidity.