A beam of light passing through crown glass (n=1.5) strikes the surface between the glass and air experiencing total internal reflection. Which of the following changes to the experiment would ensure that the beam of light continues to experience this phenomenon?
(a) Have the light originate in air
(b) Decrease the angle of incidence
(c) Immerse the glass in water (n=1.33)
(d) Increases the angle of incidence