Which of the following polymers contains an ester linkage?

'Rayon' is

Vulcanization of rubber is carried out by heating a mixture of.

Which of the following sets are correct regarding polymers?
$A$. Copolymer : $\text{Buna-}S$
$B$. Condensation polymer : $\text{Nylon-}6,6$
$C$. Fibre : $\text{Nylon-}6,6$
$D$. Thermosetting polymer : $\text{Terylene}$
$E$. Homopolymer : $\text{Buna-}N$
Choose the correct answer from the options given below.

Given below are two statements:
Statement $I:$ Ethene at $333$ to $343 \ K$ and $6-7 \ atm$ pressure in the presence of $AlEt_3$ and $TiCl_4$ undergoes addition polymerization to give $LDP$.
Statement $II:$ Caprolactam at $533-543 \ K$ in $H_2O$ through step growth polymerizes to give Nylon-$6$.
In the light of the above Statements,choose the correct answer from the options given below:

Among the following,the biodegradable polymer is $.....$