For the exothermic reaction $\text{N}_2(g) + 3\text{H}_2(g) \rightleftharpoons 2\text{NH}_3(g)$, according to Le Chatelier's principle, the yield of ammonia increases with:
- ADecreasing pressure and increasing temperature
- BIncreasing both temperature and pressure
- CIncreasing pressure and decreasing temperature
- DDecreasing both temperature and pressure