Match List-$I$ with List-$II$.

List-$I$ (Colloid Preparation Method)	List-$II$ (Chemical Reaction)
$(a)$ Hydrolysis	$(i) \; 2 AuCl_{3} + 3 HCHO + 3 H_{2}O \rightarrow 2 Au(sol) + 3 HCOOH + 6 HCl$
$(b)$ Reduction	$(ii) \; As_{2}O_{3} + 3 H_{2}S \rightarrow As_{2}S_{3}(sol) + 3 H_{2}O$
$(c)$ Oxidation	$(iii) \; SO_{2} + 2 H_{2}S \rightarrow 3 S(sol) + 2 H_{2}O$
$(d)$ Double Decomposition	$(iv) \; FeCl_{3} + 3 H_{2}O \rightarrow Fe(OH)_{3}(sol) + 3 HCl$

Choose the most appropriate answer from the options given below.

• A
  $(a)-(i), (b)-(iii), (c)-(ii), (d)-(iv)$
• B
  $(a)-(iv), (b)-(i), (c)-(iii), (d)-(ii)$
• C
  $(a)-(iv), (b)-(ii), (c)-(iii), (d)-(i)$
• D
  $(a)-(i), (b)-(ii), (c)-(iv), (d)-(iii)$