At room temperature, lithium combines with nitrogen to produce solid $\text{Li}_3\text{N}$. As shown, three vessels of the same volume are joined by taps 1 and 2. The vessel on the left has been evacuated, the centre vessel contains the equilibrium system $\text{N}_2(\text{g}) + 3\text{H}_2(\text{g}) \rightleftharpoons 2\text{NH}_3(\text{g})$, and the vessel on the right contains lithium alone. Which action would make the equilibrium mixture contain the largest amount of ammonia?
- AKeep taps 1 and 2 closed.
- BOpen both taps 1 and 2.
- COpen tap 1 only.
- DOpen tap 2 only.