Olivia is on a swing at the playground. A girl is swinging on a swing set. At W she is about 45 degrees up and to the left. At X she is near the bottom of the swing just to the left. At Y she is near the bottom of the swing just to the right. At Z she is about 45 degrees up and to the right. At which point is her kinetic energy increasing and her potential energy decreasing? W X Y Z