Pure water boils at $100\degree\text{C}$ and freezes at $0\degree\text{C}$. What are the boiling point and freezing point of a sample of aqueous sodium chloride?
- Aboiling point $98\degree\text{C}$, freezing point $-2\degree\text{C}$
- Bboiling point $98\degree\text{C}$, freezing point $2\degree\text{C}$
- Cboiling point $102\degree\text{C}$, freezing point $-2\degree\text{C}$
- Dboiling point $102\degree\text{C}$, freezing point $2\degree\text{C}$