【单选题】
如果FMGC1的FM部分故障,那么()
A、MCDU1上显示INDEPENDENT OPERATION
B、MCDU1上显示OPP FMGC IN PROGRESS
C、MCDU2上显示OPP FMGC IN PROGRESS
D、MCDU2上显示FMS1/FMS2 AC STS DIFF
A、MCDU1上显示INDEPENDENT OPERATION
B、MCDU1上显示OPP FMGC IN PROGRESS
C、MCDU2上显示OPP FMGC IN PROGRESS
D、MCDU2上显示FMS1/FMS2 AC STS DIFF