For a general equation of the nature xP + yQ ≈ mR + nS, the expression for the equilibrium constant is?

• A.k (p)^x (Q)^y
• B.(p)^x (Q)^y / (R)^m (S)ⁿ
• C.(R)^m (S)ⁿ / (p)^x (Q)^y
• D.m(R) n (S) / x(P) y (Q)
• E.