Some of the world' s most beautiful cats are Persian cats. However, it must be acknowledged that all Persian cats are pompous, and pompous cats are invariably irritating. If the statements above are true, each of the following must also be true on the basis of them EXCEPT: ["Some of the world's most beautiful cats are irritating.", "Some irritating cats are among the world's most beautiful cats.", 'Any cat that is not irritating is not a Persian cat.', 'Some irritating and beautiful cats are not Persian cats.']