Match List-$I$ with List-$II$:

List-$I$ (Transition metal/Compound/complex)	List-$II$ (Catalytic Role)
$A$. $V_2O_5$	$I$. Preparation of ammonia from $N_2/H_2$ mixture
$B$. $Fe$	$II$. Polymerisation of alkynes
$C$. $PdCl_2$	$III$. Preparation of $H_2SO_4$ from $SO_2$
$D$. $Ni$ complex	$IV$. Oxidation of ethyne to ethanal

• A
  $A-III, B-IV, C-I, D-II$
• B
  $A-III, B-I, C-IV, D-II$
• C
  $A-II, B-I, C-IV, D-III$
• D
  $A-IV, B-I, C-III, D-II$