This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mood Disorders, Subject name: Psychiatry
[{'content': 'Alexithymia is: \nSelect and explain. \nA. A feeling of intense rapture, B. Pathological sadness, C. Affective flattening, D. Inability to recognise and describe feelings', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D ref: Ahuja, 4th/e p. 13 and 5th/e p. 252', 'role': 'assistant'}]