An administrator has removed a client LPAR and would like to unmap the virtual Fibre Channel adapter vfchost0 from the physical backing adapter fcs2. Which of the following commands will achieve this?
A. rmvdev -vtd vfchost0
B. vfcumap -vdev vfchost0 -dev fcs2
C. rmdev -dev fcs2
D. vfcmap -vadapter vfchost0 -fcp