Assertion Shining of diamond is due to the phenomenon of total internal reflection.
Reason Refractive index of diamond is large. Hence,critical angle is small.
A. If both Assertion and Reason are true and Reason is the correct explanation of Assertion.
B. If both Assertion and Reason are true but Reason is not correct explanation of Assertion.
C. If Assertion is true but Reason is false.
D. If Assertion is false but Reason is true.