Concept:A plane mirror always forms an image that is virtual, erect, of the same size as the object, and laterally inverted.
Explanation:The image distance is equal to the object distance for a plane mirror.
The image is upright, but left and right are reversed.
The size of the image is always exactly equal to the size of the object.
It cannot be smaller or bigger than the object.
Therefore, any description saying the image is bigger than the object is incorrect.
Answer:Option C — the image is erect and bigger than the object is not a correct description.