A student wants to calibrate a mercury-in-glass thermometer using a $^\circ\text{C}$ scale. Which values should she choose for the lower fixed point and the upper fixed point?
- Alower fixed point: melting point of ice; upper fixed point: boiling point of mercury
- Blower fixed point: melting point of ice; upper fixed point: boiling point of water
- Clower fixed point: melting point of mercury; upper fixed point: boiling point of mercury
- Dlower fixed point: melting point of mercury; upper fixed point: boiling point of water