Which triangle defined by the given points on the coordinate plane is similar to the triangle illustrated? A) (−1, 1), (−1, 4), (−6, 1) B) (−1, 1), (−1, 5), (−6, 1) C) (−1, 1), (−1, 4), (−7, 1) D) (−1, 1), (−1, 5), (−7, 1)