In order to bypass print filters using lpr, which of following switches should be used:

A.
lpr -o nofilter

B.
lpr -l

C.
lpr -o raw

D.
lpr -r

Explanation:
From the man pages
-l Specifies that the print file is already formatted for the destination and should be sent without filtering. This option  is  equivalent  to  “-o raw”.