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單項(xiàng)選擇題

An administrator tries to change the checksum_offload setting on ent0, but the chdev command responds that the adapter is busy.  What can be done to resolve this()?  

A.Use chdev with -P flag and run cfgmgr.
B.Use chdev with -R flag and run cfgmgr.
C.Use chdev with -P flag and reboot the system.
D.Use chdev with -R flag and reboot the system.

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