Assertion (A) : Graphite is an example of tetragonal crystal system.
Reason (R ) : For a tetragonal system, `a = b != c` and `alpha = beta = 90^(@), gamma = 120^(@)`.

Options

A. If both assertion and reason are correct and reason is correct explanation for assertion
B. If both assertion and reason are correct but reason is not correct explanation for assertion
C. If assertion is correct but reason is incorrect
D. If both assertion and reason are incorrect

Answer

D

Explanation

Correct Assertion Graphite is an example of hexagonal system
Correct Reason For hexagonal system
`a=b ne c, alpha = beta =90^(@) , gamma =120^(@)`