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单项选择题

A VIO server has two fibre channel adapters, fcs0 fcs1, attached for redundant access to a storage subsystem. 
If fcs1 has failed, what is the correct procedure to rectify this problem? ()

A. Using ’diagmenu’ command, set fcs1 to Defined.
B. Using ’oem_setup_env’ and ’rmdev -R’ commands, set fcs1 adapter to ’Defined’ state.
C. Using ’diagmenu’ command, set the fcs1 state to Defined
D. Using ’oem_setup_env’ and ’rmdev -dl’ commands, set the state of fcs1 to Defined