NEET 2023 Chemistry question

On balancing the given redox reaction, aCr_2O_7^{2-}+bSO_3^{2-}(aq)+cH^+(aq)\rightarrow2aCr^{3+}(aq)+bSO_4^{2-}(aq)+\frac c2H_2O(l) the coefficients a, b and c are found to be, respectively :

• (A)8, 1, 3
• (B)1, 3, 8Correct
• (C)3, 8, 1
• (D)1, 8, 3