I'm trying to set up a drag and drow image question in a Quiz where the participant has to select the correct position of an object on an image. For this, I uploaded an image of a circle and defined the drop zones. However a participant of the quiz can see the correct drop zones: they are depicted by a black bordered square (see image; I manually added the green line for purpose of visibility). I understand I can include multiple drop zones such that the participant needs to pick the correct one, but I'd like to show no drop zone up front and have the quiz validate whether the location selected by the participant is with the range of the predefined answer. Is that possible?