How many of the following are correct  --  Intramolecular redox  --  Disproportionation  --  Intramolecular redox  --   Intramolecular redox

In all these reactions , in the same molecule , one atom undergoes oxidationand the other atom undergoes reductionThese are Intramolecular redox reactionsIn this reaction same element (oxygen) undergoes both oxidation & reductionThis is a disproportion reaction