With respect to the spoked wheel illusion, which statement BEST describes the apparent motion of the gray wedges on the one hand, and that of the spokes on the other?
The motion of the wedges as well as that of the spokes is apparent but not illusory.
The motion of the wedges is both apparent and illusory. That of the spokes is apparent but not illusory.
The motion of the wedges is apparent but not illusory. That of the spokes is both apparent and illusory.
The motion of the wedges as well as that of the spokes is both apparent and illusory.
