Which one of the following diagrams correctly illustrates the refraction of a normally incident ray of light through a glass slab?

A plane mirror is placed at the bottom of the tank containing a liquid of refractive index, $\mu$. $P$ is a small object at a height, $h$ above the mirror. An observer, $O$ vertically above $P$ outside the liquid, sees $P$ and its image in the mirror. The apparent distance between these two will be