Knowing that the boiling point of ethanethiol, a thiol, is 35°C, while that of propanol, an alcohol, is 97°C, choose the alternative that CORRECTLY...

Knowing that the boiling point of ethanethiol, a thiol, is 35°C, while that of propanol, an alcohol, is 97°C, choose the alternative that CORRECTLY justifies the difference in the boiling points of these compounds:


Sulfur is heavier than oxygen and therefore the boiling point is lower.
The presence of one more carbon in propanol leads to an increase in the boiling point.
The hydrogen bonds formed by the thiol are weaker than those formed by the alcohol.
The sulfur compound is not capable of making hydrogen bonds.
Propanol makes only dipole-induced bonds, which are stronger than hydrogen bonds.