This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General pathology, Subject name: Pathology
[{'content': 'Triple helix is found in \nSelect and explain. \nA. Cystine, B. Collagen, C. Pectin, D. DNA', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Robbins basic pathology 9th edition page no 63 The collagens are composed of three seperate polypeptide chains braided into a ropelike triple helix.', 'role': 'assistant'}]