The tac command _________. a. is not a valid Linux command b. displays the contents of hidden files c. displays the contents of a file in reverse order, last word on the line first and first word on...

The tac command _________.

a. is not a valid Linux command

b. displays the contents of hidden files

c. displays the contents of a file in

reverse order, last word on the line

first and first word on the line last

d. displays the contents of a file in

reverse order, last line first and first

line last