Assertion (A): Graphite is a good conductor of electricity, however, diamond belongs to the category of insulators.
Reason (R): Graphite is soft in nature, on the other hand diamond is very hard and brittle.

Options

A. Both A and R are true R is the correct explanation of A.
B. Both A and R are true R is not the correct explanation of A.
C. A is true but R is false
D. A is false but R is true

Answer

B