Excess of KI reacts with CuSO4 solution, and Na2S2O3 solution is added to it. Which of the following statements is incorrect for the reaction?

Copper sulphate reacts with potassium iodide to form cuprous iodide and iodine.2CuSO4​+4KI→Cu2​I2​↓+I2​+2K2​SO4​Thus, CuI2​ is not formed in this reaction.Hence, the option B is incorrect and option A is correct.The liberated iodine is titrated with sodium thiosulphate to form sodium tetrathionate.2Na2​S2​O3​+I2​→Na2​S4​O6​+2NaIIodine is reduced and sodium thiosulphate  is oxidized.