Consider the following statements regarding the use of chlorine and its compounds in water treatment: 1. Chlorine gas reacts with water to produce hypochlorous acid (HOCl) and hydrochloric acid (HCl). 2. The addition of chlorine to water containing natural organic matter can lead to the formation of carcinogenic trihalomethanes (THMs). 3. Chloramines are weaker disinfectants than free chlorine but are preferred for maintaining a disinfectant residual in distribution systems due to their stability. Which of the statements given above are correct?

Options:

• A: 1, 2 and 3
• B: 1 and 2 only
• C: 2 and 3 only
• D: 1 and 3 only

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