There exist an equilibrium between solid `SrSO_(4)` and `Sr^(2+)` and `SO_(4)^(2-)` ion in aqueous medium. The possible equilibrium states are shown in figure as thick line. Now, if equlibrium is disturbed by addition of (a) `Sr(NO_(3))_(2)` and (b) `K_(2)SO_(4)` and dotted line represent approch of system towards equilibrium. Match the column given below :

(I) addition of `Sr(NO_(3))_(2)`
(II) addition of `K_(2)SO_(4)`

Options

A. (I) (iii), (II) (iv)
B. (I) (iv), (II) (v)
C. (I) (vi),(II) (v)
D. (I) (iv), (II) (vi)

Answer

C