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': 'One of the intestinal enzymes that are generally deficient in children following an attack of severe infectious enteritis is – \nSelect and explain. \nA. Lactase, B. Trypsin, C. Lipase, D. Amylase', 'role': 'user'}, {'content': "Answer: A \nExplanation: `Because Lactase activity in the mucosa is at best marginal, this enzyme is particularly likely to be depleted secondary to diffuse mucosal disease' - Nelson\nCauses of Acquired Lactase deficiency\n1. Acute Infective enteritis\n\nViral gastroenteritis\xa0\xa0\xa0\nBacterial gastroenteritis\xa0\xa0\xa0\xa0\xa0\xa0\xa0\n\n2. Cystic fibrosis \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\n3. Protein-energy malnutrition\xa0\xa0\xa0\xa0\n4. Cow's milk protein intolerance \xa0\n5. Prolonged use of drugs like Neomycin.", 'role': 'assistant'}]