A light ray strikes the surface of a glass block. The glass has refractive index $1.5$. The refraction angle is $r$. The angle between the refracted ray and the route the light would follow if the glass block were not present is $d$. What are $r$ and $d$?
- A$r = 23^{\circ}, d = 12^{\circ}$
- B$r = 24^{\circ}, d = 12^{\circ}$
- C$r = 23^{\circ}, d = 13^{\circ}$
- D$r = 24^{\circ}, d = 13^{\circ}$