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: Psychiatry
[{'content': "True statement about Korsakoff's psychosis is - \nSelect and explain. \nA. Severe antegrade + Mild retrograde memory defect, B. Mild antegrade + severe retrograde memory defect, C. Only antegrade memory defect, D. Only retrograde memory defect", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Korsakoff syndrome has sever antegrade amnesia and less severe retrograde amnesia.', 'role': 'assistant'}]