# Co-polymers can be obtained by

$\begin {array} {1 1} (a)\;\text{Addition reaction only}\\ (b)\;\text{Condensation reaction only} \\ (c)\;\text{Both addition and condensation}\\ (d)\;\text{Neither addition nor condensation} \end {array}$

Copolymers can be formed by both addition and condensation polymerisation. For eg: styrene butadiene is a copolymer which is obtained by addition polymerisation while nylon 66 is obtained by condensation polymerisation
Ans : (c)