When a H atom is joined to a more electronegative N, F, or O atom, hydrogen bonding is seen. Thus, triethylamine and ethanol are capable of forming hydrogen bonds. Compared to triethylamine, where H is connected to a less electronegative nitrogen, ethanol has H attached to a more electronegative oxygen. In addition, the I effect of three methyl groups in triethyl amine reduces the strength of hydrogen bonding.

Hence , the correct option is (A). Ethanol