Light Traveling in a Transparent Medium with an Index of Refraction

Multiple Choice

Light traveling in a transparent medium with an index of refraction n₁ is incident on a transparent boundary with a second transparent medium with an index n₂.Very little light is transmitted into the second medium.Which of the following statements must be true?

A) n₁ equals n₂
B) n₁ is somewhat greater than n₂
C) n₂ is somewhat greater than n₁
D) n₂ is much greater than n₁
E) Either index of refraction is much greater than the other