Total internal reflection. Which of the statements below is correct?

i. is a phenomenon of refraction of light.

ii. occurs when light rays travel into a denser medium.

iii. occurs when the critical angle is just exceeded.

iv. is a phenomenon of reflection of light.

A. i and ii only
B. i and iii only
C. i, ii and iii only
D. i, iii and iv only

Correct Answer: Option B

B. i and iii only