Question: Haskell provides a standard function, last :: [a] -> a, that returns the last element of a list. From reading the type alone, what are

Haskell provides a standard function, last :: [a] -> a, that returns the last element of a list. From reading the type alone, what are the possible valid behaviors (omitting crashes and infinite loops) that this function could have? What are a few things that this function clearly cannot do?

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