Assertion `:` `1,3-` Butadiene is the monomer for natural rubber.
Reason `:` Natural rubber is formed though anionic addition polymerization.

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason 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

Answer

D

Explanation

Monomer of natural rubber is isoprene, rubber is radical addition polymer.