Which statement about the solubility of methanol, CH$_3$OH, and methanethiol, CH$_3$SH, are true?
Methanethiol is more soluble in water because it has a lower molecular mass than methanol.
Methanol is more soluble in water because oxygen is more electronegative than sulfur.
Methanethiol is more soluble in water because sulfur is more electronegative than oxygen.
Methanol is more soluble in water because it has a greater molecular mass than methanethiol.