Answer:
B
Step-by-step explanation:
Apply the Pythagorean Theorem to determine whether or not the given triplets represent right triangles or not:
I. 5 feet and 13 feet: Â 5^2 + 12^2 = 13^2 is TRUE
II.  9 ft and √63 ft:  9^2, 63, 12^2:  63 + 81 do add up to 144  TRUE
III. Â 2, 10, 12^2: Â 2 + 10 do NOT add up to 144. Â FALSE
Answer B is correct