Which statement reasonably explains the difference in aqueous solubility between the following two isomers with molecular formula C$6$H$15$N$?$

Name Lewis dot structure Solubility

n$-$Hexylamine hexylamine.png $12$ mg$/$mL

Triethylamine triethylamine.png $55$ mg$/$mL

Group of answer choices

The hydrophobic part of triethylamine is more compact and less exposed to the water, increasing its solubility compared to n$-$hexylamine.

n$-$Hexylamine may form more hydrogen bonds with water, decreasing its solubility compared to triethylamine.

n$-$Hexylamine has a larger molar mass, decreasing its solubility compared to triethylamine.