This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Organic Mental Disorders, Subject name: Psychiatry
[{'content': 'The psychiatric disorder most commonly associated with myxedema: \nSelect and explain. \nA. Depression, B. Mania, C. Phobia, D. Psychosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The most common psychiatric disorder associated with hypothyroidism is cognitive slowing followed by depression.', 'role': 'assistant'}]