有下列水溶液:(1) 0.01 mol/L CH3COOH(2) 0.01 mol/L CH3COOH溶液和等体积0.01 mol/LHCl溶液混合(3) 0.01 mol/L CH3COOH溶液和等体积0.01 mol/LNaOH溶液混合(4) 0.01 mol/L CH3COOH溶液和等体积0.01 mol/LNaAc溶液混合则它们的pH值由大到小的正确次序是()
A.(1)>(2)>(3)>(4) B.(1)>(3)>(2)>(4) C.(4)>(3)>(2)>(1) D.(3)>(4)>(1)>(2)