Assertion : 2-Methyl-1, 3-butadiene is the monomer of natural rubber. Reason : Natural rubber is formed through anionic addition polymerization.

• 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 the correct explanation of assertion.
• C. If assertion is true but reason is false.
• D. If both assertion and reason are false.