Question $13(1)$ Given the following command, w UJ$19$ hat will be the output: sls oo Only the filenames with the string $\text{'}$oo$\text{'}$ within the file will report All lines in all files and the corresponding filenames containing the string $\text{'}$oo$\text{'}$ will report Only the lines within files containing the string $\text{'}$oo$\text{'}$ will report Only the filenames with the string $\text{'}$oo$\text{'}$ in the filename will report