单项选择题

A.3900F压气机出口过热电门,1900F管道过热电门,2500F管道过热电门;
B.3900F压气机出口过热电门,1900F管道过热电门;2100F涡轮入口过热电门,
C.3900F压气机出口过热电门,2100F涡轮入口过热电门,2500F管道过热电门;
D.2300F压气机出口温度传感器,2500F管道过热电门,1900F管道过热电.