Correct Answer:

Solution : As per the mirror image properties, closer things appear closer to the mirror in the reflection.
Here, according to the information provided, the mirror is placed at the bottom of the figure (on line AB). So, the top of the reflected image will appear as the bottom, and the bottom will appear as the top. However, the left and right sides of the reflected image will remain the same.
Thus, the correct mirror image of the given figure will be –

Hence, the fourth option is correct.