The oxidation states of sulphur in the anions $SO_3^{2–}, S_2O_4^{2–}$ and $S_2O_6^{2–}$ follow the order -

Question

( A ) $S_2O_4^{^{2–}} < S_2O_6^{^{2–}} < SO_3^{^{2–}}$
( B ) $SO_3^{^{2–}} < S_2O_4^{^{2–}} < S_2O_6^{^{2–}}$
( C ) $S_2O_4^{^{2–}} < SO_3^{^{2–}} < S_2O_6^{^{2–}}$
( D ) $S_2O_6^{^{2–}} < S_2O_4^{^{2–}} < SO_3^{^{2–}}$