In which of the following reactions, the equilibrium will shift to the right, if the total pressure is increased ?
A. H2 + Cl2 ⇌ 2HCl
B. N2 + O2 ⇌ 2NO
C. N2O4 ⇌ 2 NO2
D. H2 + I2 ⇌ 2HI