The figure below shows two triangles EFG and KLM: Two triangles EFG and KLM are drawn. Angle KML is a right angle. The measures of the sides of the triangles are, In triangle EF

Which of the following can be used to prove that triangle EFG is also a right triangle? (1 point)

a
Prove that a + b is greater than c in triangle EFG so c2 = a2 + b2.

b
Prove that the sum of the squares of a and c in triangle EFG is greater than square of b in triangle KLM.

c
Prove that KL = EF so in triangle KLM a2 + b2 = c2.

d
Prove that KL = EF so in triangle KLM c2 = a2 + b2, which makes triangle EFG a right triangle.