This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: nutrition and digestion, Subject name: Biochemistry
[{'content': 'Dietary fibre is rich in \nSelect and explain. \nA. Starch, B. Pectin, C. Collagen, D. Proteoglycan', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Repeated question', 'role': 'assistant'}]