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': 'A 12-year-old girl has a history of recurrent bulky stools and abdominal pain since 3 years of age. She has moderate pallor and her weight and height are below the 3rd percentile. Which of the following are the most appropriate investigations to make a specific diagnosis? \nSelect and explain. \nA. Small intestinal biopsy, B. Barium studies, C. 24 hours fecal fat estimation, D. Urinary d–xylose test', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Clinical profile of the child given in question makes the diagnosis of malabsorption syndrome associated with chronic diarrhoea.\nIntestinal biopsy is necessary to differentiate chronic diarrhoea due to different pathophysiologic reasons.\nWork-up of a child suspected to have chronic diarrhoea and malabsorptions includes the following investigations -Repeated stool examination (especially for giardia), Fecal fat excretion studies, D-xylose test, Intestinal biopsy, Specific tests e.g. sweat chloride for cystic fibrosis, serology for celiac disease, exocrine pancreatic function.', 'role': 'assistant'}]