If a mirror is placed on line PQ in the question figure, then which of the answer figures is the correct image of the question figure?

When a mirror is placed on the line PQ,

The facing of the figure to the left and right direction changes to opposite direction in mirror image(right facing changes to left and vice versa). There won't be change in top and bottom direction. There won't be change in shape of figure.

The triangle in the figure facing the right direction faces to left in the mirror image.

$$\therefore\ $$The mirror image of the given figure is

Hence, the correct answer is Option B