Correct order of boiling point is

As the molecular weight [size] ↓es the surface area of the molecule ↓es and Hence Intermolecular attraction force ↓esTherefore the amount of energy (heat) required to break up those attraction forces ↓es, i.e., the boiling point ↓esNOTE: Each molecule of H2O2,D2O,H2O2 forms four hydrogen bond but their size order is