Which of the following has a lower boiling point than ethanamine?

Propane

All given compounds have similar molecular masses and can be compared. Ethanamine has a higher boiling point than propane because it is a polar molecule and forms intermolecular hydrogen bonds. However, it has a lower boiling point than ethanal, ethanol and methanoic acid as the O-H bonds in these compounds is more polar than the N-H bond in ethanamine. This makes the hydrogen bonds stronger.