Question: The tac command _ _ _ _ _ . a . displays the contents of a file in reverse order, last line first and first

The tac command _____.
a. displays the contents of a file in reverse order, last line first and first line last
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. is not a valid Linux command

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