Match the column $I$ with column $II$ and mark the appropriate choice.

Column $I$	Column $II$
$A$. Kohlrausch law	$i$. $\Lambda _{m}^o = \nu _+ \lambda _+^o + \nu _- \lambda _-^o$
$B$. Molar Conductivity	$ii$. $\Lambda _m = \frac{\kappa \times 1000}{M}$
$C$. Degree of Dissociation	$iii$. $\alpha = \frac{\Lambda _m}{\Lambda _m^o}$
$D$. Dissociation Constant	$iv$. $K_a = \frac{C\alpha ^2}{1 - \alpha}$

• A
  $A \to (iii), B \to (iv), C \to (i), D \to (ii)$
• B
  $A \to (i), B \to (ii), C \to (iii), D \to (iv)$
• C
  $A \to (iv), B \to (i), C \to (ii), D \to (iii)$
• D
  $A \to (ii), B \to (iii), C \to (iv), D \to (i)$