In a Study of the System, Cl₂(g)+ 2 NO(g)

In a study of the system, Cl₂(g) + 2 NO(g) 2 NOCl(g) , at 425 K, several different reaction mixtures, described below, were prepared, placed in 5.00 liter containers, and allowed to attain equilibrium at 425 K. Despite having different starting compositions shown, four of the five mixtures had the identical composition at equilibrium. Which one of the systems attained a different equilibrium composition than the others?

A) System 1: 0.100 moles of Cl₂, 0.000 moles of NO and 0.600 moles of NOCl
B) System 2: 0.250 moles of Cl₂, 0.300 moles of NO and 0.300 moles of NOCl
C) System 3: 0.400 moles of Cl₂, 0.600 moles of NO and 0.000 moles of NOCl
D) System 4: 0.300 moles of Cl₂, 0.250 moles of NO and 0.250 moles of NOCl
E) System 5: 0.350 moles of Cl₂, 0.500 moles of NO and 0.100 moles of NOCl