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': 'Which one of the following disorders is autosomal recessive ? \nSelect and explain. \nA. Homocystinuria, B. G6PD deficiency, C. Myotonic dystrophy, D. Otospongiosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]