Which sample does not contain a quantity of atoms equal to the Avogadro constant?
- A$14\,\text{g}$ of nitrogen, $\text{N}_2$
- B$6\,\text{g}$ of water, $\text{H}_2\text{O}$
- C$4\,\text{g}$ of helium, $\text{He}$
- D$28\,\text{g}$ of carbon monoxide, $\text{CO}$