An administrator receives a warning about a file system filling up, and then identifies a large file located at /tmp/largelogfile. The administrator deletes the file, but no space is recovered on the file system.

Which of the following commands would BEST assists the administrator in identifying the problem?

A. lsof | grep largelogfile

B. pkill /tmp/largelogfile
C. pgrep largelogfile
D. ps –ef | grep largelogfile

Reference: https://access.redhat.com/solutions/2316