What factors influence choosing chlorine versus chloramine as a disinfectant in a drinking-water distribution system?

• A. Residual stability; formation of disinfection byproducts; taste/odor; regulatory requirements; treatment costs; and contact time.
• B. Color, odor, taste, and turbidity only.
• C. pH, alkalinity, and hardness.
• D. Turbidity, color, dissolved oxygen, and temperature.

Answer: (A)