D and F Block Elements

Iron (III) catalyses the reaction between iodide and persulphate ions, in which A. $$\mathrm{Fe}^{3+}$$ oxidises the iodide ion B. $$\mathrm{Fe}^{3+}$$ oxidises the persulphate ion C. $$\mathrm{Fe}^{2+}$$ reduces the iodide ion D. $$\mathrm{Fe}^{2+}$$ reduces the persulphate ion Choose the most appropriate answer from the options given below: