Which of the following chown commands will change the ownership to foo and the group to bar on a file named biglist?

Which of the following chown commands will change the ownership to foo and the group to bar on a
file named biglist?

A.
chown foo/bar biglist

B.
chown -u foo -g bar biglist

C.
chown foo:bar biglist

D.
chown –user foo –group bar biglist