On a coordinate plane, 2 triangles are shown. The first triangle has points A (1, 4), B (3, 4), C (3, 2). The second triangle has points A prime (negative 4, 1), B prime (negative 4, 3), C prime (negative 2, 3). Triangle ABC was rotated about the origin. Which rule describes the rotation? R0, 90° R0, 180° R0, 270° R0, 360°