State whether the following statements are true or false. Justify your answer. (a) The refresh rate of a 512 times 512 frame buffer is approximately 21 frames/second, if the access time for each pixel is 200 nanoseconds. (b) 2-D rotations about the origin are non-commutative. (c) If a polygon lies on a plane Ax + By + Cz + D = 0, then N = (A, B, C) is normal to that plane. (d) The matrix [d 0 0 0 0 d 0 0 0 0 d 0 0 0 1 0] represents the perspective projection matrix on the plane z = d, where the centre of projection is (0, 0, 0). (e) A cubic Bezier curve cannot be drawn if the control points are located at the vertices of a rectangle