This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pediatrics
[{'content': 'In acute diarrhea following is used to decrease duration and severity - \nSelect and explain. \nA. zn, B. mg, C. fe, D. ca', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Recent studies suggest that administration of zinc along with new low osmolarity oral rehydration solutions / salts (ORS), can reduce the duration and severity of diarrheal episodes for up to three months. Reference: GHAI Essential pediatrics, 8th edition', 'role': 'assistant'}]