Consider the reaction represented by the following equation: N2(g) + 3H2(g) ⇌ 2NH3(g); ∆Hϴ = -xkJ mol-1. Which of the following conditions would increase the yield of NH3?

A. Addition of iron catalyst
B. Increase in the temperature of the system
C. Increase in the volume occupied by reactants
D. Increase in the total pressure of the system

Correct Answer: Option D

D. Increase in the total pressure of the system