What directive, when added to /etc/cups/client.conf, will enable applications to print on CUPS printers configured on a remote CUPS server named foobar?

What directive, when added to /etc/cups/client.conf, will enable applications
to print on CUPS printers configured on a remote CUPS server named foobar?

A.
ServerName foobar

B.
Default foobar

C.
RemoteServer foobar

D.
Backend foobar