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

List-$I$ (Salt)	List-$II$ (Flame colour wavelength)
$(a)$ $LiCl$	$(i)$ $455.5 \text{ nm}$
$(b)$ $NaCl$	$(ii)$ $670.8 \text{ nm}$
$(c)$ $RbCl$	$(iii)$ $780.0 \text{ nm}$
$(d)$ $CsCl$	$(iv)$ $589.2 \text{ nm}$

Choose the correct answer from the options given below:

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