[单选题]The FADEC makes a passive survey of the engine during the starting sequence (up to 50 % N2) : the flight crew is made aware of an abnormal start by a proper ECAM warning and has to interrupt the start sequence. The FADEC has not the authority to abort the manual start, so flight crew may interrupt the starting sequence: A. before the MASTER switch is set to ON, by switching the MAN START pushbutton switch to OFF B. after the MASTER switch set to ON, by switching the MAN START pushbutton and the MASTER switch to OFF (flight crew must perform a dry cranking cycle). C. Both of the above are correct.