An Afterimage When Viewed in the Dark Appears to Move

An afterimage when viewed in the dark appears to move when you move your eyes. The Corollary Discharge Theory predicts this because

A) there is an IDS, but not a CDS.
B) there is no IDS, but there is a CDS.
C) there is no IDS and no CDS.
D) none of the these; the corollary discharge theory cannot explain this event.