Social & Preventive Medicine Communicable diseases be487503 A 12 kg child with diarrhoea, fluid to be replaced in first 4 hours - A 0-400ml B 400-800ml C 800-1200ml D 1200-1600ml High-Yield Explanation <p> 800-1200 ml. Park&;s textbook of preventive and social medicine,K.Park,23rd edition,page no:226. <\p>