The correct match between Item-$I$ and Item-$II$ is

Item-$I$	Item-$II$
$(a)$ High density polythene	$(I)$ Peroxide catalyst
$(b)$ Polyacrylonitrile	$(II)$ Condensation at high temperature and pressure
$(c)$ Novolac	$(III)$ Ziegler-Natta catalyst
$(d)$ Nylon-$6$	$(IV)$ Acid or base catalyst

• A
  $a \to III, b \to I, c \to II, d \to IV$
• B
  $a \to IV, b \to II, c \to I, d \to III$
• C
  $a \to II, b \to IV, c \to I, d \to III$
• D
  $a \to III, b \to I, c \to IV, d \to II$