Small quantities of solutions of compounds TX, TY and TZ are put into separate test tubes containing X, Y and Z solution. TX does not react with any of these. TY reacts with both X and Z. TZ reacts with X. The decreasing order of state of oxidation of the anions \[{{X}^{-}},{{Y}^{-}},{{Z}^{-}}\]is

• A. \[{{Y}^{-}},{{Z}^{-}},{{X}^{-}}\]               
• B. \[{{Z}^{-}},{{X}^{-}},{{Y}^{-}}\]
• C. \[{{Y}^{-}},{{X}^{-}},{{Z}^{-}}\]               
• D. \[{{X}^{-}},{{Z}^{-}},{{Y}^{-}}\]