What is the correct method to temporarily unmanage an interface found in the topology?

A.
locate the interface in the structure browser, use the Tools menu and chose Unmanage

B.
locate the interface in the structure browser, right-click on it, and chose Unmanage from the
menu

C.
modify the $NCHOME/precision/disco/stitchers/ManagedStatus.stch to set the interface to
Extralnfo > ManagedStatus=1

D.
modify the $NCHOME/precision/disco/stitchersyTagManagedEntities.stch to set the interface to
Extralnfo > ManagedStatus=2