Which set of integers is not a Pythagorean triple?
A.
9, 40, 41
B.
11, 60, 61
C.
15, 18, 21
D.
20, 21, 29
A.
9, 40, 41
B.
11, 60, 61
C.
15, 18, 21
D.
20, 21, 29