The image formed by a plane mirror is :

A plane mirror is a flat reflective surface that forms an image based on the laws of reflection. The characteristics of an image formed by a plane mirror are:

• Virtual: The reflected rays do not actually meet; they only appear to diverge from a point behind the mirror. Therefore, the image cannot be obtained on a screen.
• Erect: The image is upright and maintains the same vertical orientation as the object.
• Same Size: The image is exactly the same size as the object.
• Same Distance: The image is formed as far behind the mirror as the object is in front of it.
• Laterally Inverted: The left side of the object appears as the right side of the image and vice versa.

Since the image is always virtual and upright regardless of the object's size or distance, option A is correct.