Considering that you want to open a binary file for reading and writing, which of the following commands should you use?

strm$.$open$($filename$,$ ios::in $|$ ios::out$)$;

strm$.$open$($filenameios: :binary$)$;

strm$.$open$($filename$)$;

strm$.$open$($filename$,$ ios::in $|$ ios::out $|$ ios::binary$)$;