The melting points listed for ethanol and mercury are given here. Ethanol: $-114\ ^\circ\text{C}$. Mercury: $-39\ ^\circ\text{C}$. Which one, or both, of these liquids would be suitable for use in a liquid-in-glass thermometer to measure temperatures of $-50\ ^\circ\text{C}$ and $-120\ ^\circ\text{C}$?
- Aethanol only
- Bethanol and mercury
- Cmercury only
- Dneither ethanol nor mercury