25. Based on the following experiments, which substance can prove to bebleaching?
(A) When chlorine is introduced into a NaOH solution with phenolphthalein, thesolution immediately discolors.
(B) When a small amount of Na2O2 powder is added to the water withphenolphthalein, the solution first turns red and then discolors.
(C) The red color of phenolphthalein solution fades after the addition of SO2.
(D) When SO2 is added to an acidic solution of KMnO4, the purple color of thesolution fades.
(E) Addition of nitric acidified AgNO3 solution to chlorine water results in whiteprecipitate.