Consider some facts about decomposition of H2O2. I.It is catalyzed by iodide ion in acidic or alkaline medium. II.It is second order reaction with respect to both H2O2 and I- III.Rate equation of this particular reaction will be Rate d H O k H O I dt IV.It completes in two steps and both steps are unimolecular elementary reactions. Which of the above written facts are correct, regarding decomposition of H2O2? Choose the correct option.