You have two beakers.One contains a solution of HCl at pH = 1.0.The other contains a solution of NaOH at pH = 13.Into a third beaker,you slowly and cautiously pour 20 mL of the HCl and 20 mL of the NaOH.After complete stirring,the pH of the mixture will be
A)2)0.
B)12.0.
C)7)0.
D)5)0.
E)9)0.