What does the following command do?

What does the following command do? cat ‘$TEST’

What does the following command do? cat ‘$TEST’

A.
Displays a bash syntax error message.

B.
Displays the contents of the file named $TEST if it exists.

C.
Waits for the user to enter text and then echos the text back.

D.
Displays the contents of the file named inside the back quotes.

E.
Displays the contents of the named by the environment variable TEST.



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