For the reversible reaction, A⇌ 2B, Kc = 10. At certain instant, [A] = 2M and [B] = 200M. Then the correct statement is

QC = [B]2[A] = (200)220 = 4000020 = 2000Given KC = 10QC > KC∴  QC must decrease to become equal to KC.Backward reaction favours