Assertion: ZSM-5 is used as a catalyst in petrochemical industries.
Reason: Zeolites are three dimensional network Silicates in which some silicon atoms are replaced by aluminium atoms.
A. if both assertion and reason are true and the reason is the correct explanation of the assertion.
B. if both assertion and reson are true but reason is not the correct explanation of the assertion.
C. If assertion is true but reason is false.
D. If the assertion and reason both are false.