With the Captain’s ACP operating in degraded mode, at that station:
A.A.All ACP transmitter selectors remain functional, but receiver selectors are lost.
B.B.Altitude alert, GPWS and windshear audio warnings are not heard.
C.C.The flight interphone remains useable, the PA is lost.
D.D.VHF‐2 is the only useable radio.
正确答案是B