Which of these are Pythagorean triples?
(8,15,17)(8, 15, 17)(8,15,17)
(7,24,25)(7, 24, 25)(7,24,25)
(9,40,41)(9, 40, 41)(9,40,41)
(5,5,5)(5, 5, 5)(5,5,5)