Assertion (A): Optical fibres make use of total internal reflection. Reason (R): Light undergoes...

Assertion (A): Optical fibres make use of total internal reflection.
Reason (R): Light undergoes successive total internal reflections as it moves through an optical fibre.
(A) Both A and R are true and R is the correct explanation of A.br(B) Both A and R are true, but R is not the correct explanation of A.
(C) A is true, but R is false.
(D) A is false, but R is true.
(E) Both A and R are false.