You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
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Question: Category: AMERICAN ART & ARTISTS 
Clue: Roy Lichtenstein perfected his technique for simulating benday dots to mimic the artwork found in these "strips"

Answer: comic strips


Question: Category: CORPORATE AMERICA 
Clue: Every year, this company delivers more than a billion packages, more than the Post Office

Answer: ups


Question: Category: FABLES & TALES 
Clue: Story from which come the replies: "Not I," said the duck; "Not I," said the cat; "Not I," said the dog

Answer:
the little red hen