An  administrator  must  verify  all  filesets  are  completely  installed  before  an  upgrade.  
Which  of  the following commands will perform this task（）

A.rm /usr/local/bin/nmon
B.chmod u-s /usr/local/bin/nmon
C.Reinstall the file from the appropriate fileset
D.chmod go-rx /usr/local/bin/nmon

A.installp -E
B.Islpp -E
C.Ippchk -c
D.instfix -c