Which of the following is Teflon?

Match the polymers given in Column-$I$ with their repeating units given in Column-$II$.

Column-$I$	Column-$II$
$A$. Acrilan	$i$. $-[CH_2-CH(CN)]_n-$
$B$. Polystyrene	$ii$. $-[CH_2-CH(C_6H_5)]_n-$
$C$. Neoprene	$iii$. $-[CH_2-C(Cl)=CH-CH_2]_n-$
$D$. Novolac	$iv$. $-[CH_2-CH=CH-CH_2-CH_2-CH(CN)]_n-$
$E$. Buna-$N$	$v$. Linear phenol-formaldehyde polymer

Phenol is used in the manufacture of

Select the biodegradable polymer.

Identify the correct statement from the following:
$(A)$ Glyptal is made from the monomers ethylene glycol and phthalic acid
$(B)$ Bakelite is used in making electrical switches
$(C)$ Nylon-$2$-nylon-$6$ is a biodegradable polymer

Identify the addition polymer from the following: