Which of the following commands exactly grant read and write group permission to a file: \$chmod -group r+w myfile.txt \$chmod g+rw myfile.txt \$chmod r+w myfile.txt \$chmod -g -rw myfile.txt Question 4 1 pts In running a command shell, the order of switches is important in which the single dash must come first for short options and double dash for long options. True False