Focal length of a thin convex lens is $$10\,\text{cm}$$. An object is placed at a distance $$15\,\text{cm}$$ in front of the lens and a plane mirror is kept at $$20\,\text{cm}$$ on the other side as shown in the figure.

A

The final image is formed at distance $$10\,\text{cm}$$ from lens towards the mirror

B

The final image is formed at a distance $$30\,\text{cm}$$ from lens, meaning $$10\,\text{cm}$$ behind the mirror

C

The final image has magnification $$m=-2$$

D

The final image has magnification $$m=+2$$