45. In 1789, a French chemist Claude Louis Berthollet was first to develop a bleach solution by passing chlorine gas through a solution of potassium hydroxide. Now many factories use cheaper sodium hydroxide instead of potassium hydroxide to produce chlorine-based bleach solution. The active agent in the bleach solution mentioned above is potassium/sodium (A) chlorate (B) chlorite (C) hypochlorite (D) perchloride (E) perchlorate