0.1 millimole of CdSO4 are present in 10 mL acid solution of 0.08 N HCl. Now H2S is passed to precipitate all the Cd2+ ions. The pH of the solution after filtering off precipitate, boiling of H2S and making the solution 100 mL by adding H2O is:
(a) 2
(b) 4
(c) 6
(d) 8