Question

Could the points (-4,3), (-1,1) and (1,3) form the vertices of a right triangle? Why or why not? Answer choices given below.

A: Yes, a^2+b^2 = c^2
B: No, a^2=B^2 ≠ c^2
C: Yes, (1,3) is a right angle.
D: Yes, (-4, 3) is a right angle.