Which one is represented as a pythagorean Theorean

A. 169 units, 25 units, 144 units. B. 64 units, 9 unit, 36 units

Explain why?

B: 64 units, 9 units, 36 units because 64 would represent A for the top of the triangle, 36 would represent B for the side of the triangle, and 9 would represent C for the short length of the of triangle.