This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'Profuse watery diarrhoea in an immune compromised child is due to \nSelect and explain. \nA. Cryptococcus, B. Amoeba, C. Giardia, D. Lactose intolerance', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Giardiasis caused by Giardia lamblia is a major cause of diarrhoea in children and travellers. Individuals with malnutrition,humoral immunodefeciencies,and cystic fibrosis are particularly susceptible.\nFeatures: acute diarrhoea with sudden onset of explosive, watery foul smelling stools, along with nausea and anorexia,abdominal distension,flatulence,epigastric camps and mild fever.', 'role': 'assistant'}]