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.\(\frac{[P]^x [Q]^y}{[R]^m [S]^n}\)
• C.\(\frac{[R]^m [S]^n}{[P]^x [Q]^y}\)
• D.\(\frac{m[R] n[S]}{x[P] y[Q] }\)
• E.