Given : Reaction Equilibrium constant N₂(g) + 3H₂(g) 2NH₃(g) K₁ N₂(g) + O₂(g) 2NO(g) K₂ H (g) O (g) H O(g) K₃ The equilibrium constant K₄ for the following reaction 2NH (g) O (g) 2NO(g) 3H O(g) may be given as : (a) K K K K x x (b) K K K K (c) K K K K (d) K K K K