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: Pathology
[{'content': "Multiple pulp stones are seen in \nSelect and explain. \nA. Down's syndrome, B. Elites Danlos syndrome, C. Marfan Syndrome, D. Apert's syndrome", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ehler Danlos syndromes:\nIncludes more than 10 different disorders involving a genetic defect in collagen and connective tissue synthesis.', 'role': 'assistant'}]