(i) A powdered substance (A) on treatment with fusion mixture gives a green coloured compound (B). (ii) The solution of (B) in boiling water on acidification with dilute `H_(2)SO_(4)` gives a pink coloured compound `(C )`. `(iii)` The aqueous solution of (A) on treatment with NaOH and `Br_(2)-` water gives a compound (D). (iv) A solution of (D) in conc. `HNO_(3)` on treatment with lead peroxide at boiling temperature produced a compound (E) which was of the same coloure at that of (C). (v) A solution of (A) on treatment with a solution of barium chloride gave a white precipitate of compound (F) Which was insoluble in conc. `HNO_(3)` and conc. HCl. Consider the following statement `:` `(I) ` Anions of both (B) and (C ) are diamagnetic and have tetradhedral geometray. `(II)` Anions of both (B) and ( C) are paramagnetic and have tetrahedral geometry. (III) Anions of (B) is paramagnetic and that of (C ) is diamagnetic but both have same tetrahedral geometry. `(IV)` Green coloured compound (B) in a neutral of acidic medium disproportionates to give (C ) and (D). Of these select the correct one from the code given `:`A. I and III onlyB. II and III onlyC. II and IV onlyD. III and IV only