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The correct answer is B.

OBJ-1.11: The nano utility is an easy-to-use command-line text editor for Linux systems. Nano includes the functionality of a regular text editor, as well as syntax highlighting, multiple buffers, search and replace with regular expression support, spellchecking, UTF-8 encoding, and more. The cat (short for “concatenate“) command is one of the most frequently used commands in Linux/Unix. The cat command allows the creation of single or multiple files, view file contents, concatenate files, and redirect output in the terminal to a file. The grep is a command-line utility for searching plain-text data sets for lines that match a regular expression. The grep command works on Unix, Linux, and macOS operating systems. Grep is an acronym that stands for Global Regular Expression Print. The pwd command displays the present working directory (current directory) path to the terminal or display. If you are working on a Linux system and are unsure of where you are in the directory structure, type “pwd” and hit enter to display the path to the screen.

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