Which of the following commands displays the output of the foo command on the screen and also writes it to a file called /tmp/foodata?

Which of the following commands displays the output of the foo command on the screen and also writes it to a file called /tmp/foodata?
A . foo | less /tmp/foodata
B . foo | cp /tmp/foodata
C . foo > /tmp/foodata
D . foo | tee /tmp/foodata
E . foo > stdout >> /tmp/foodata

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Answer: D