This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Substance Related and Addictive Disorders, Subject name: Psychiatry
[{'content': 'Confabulation means \nSelect and explain. \nA. Misinterpretation of stimulus by any of the special sense organs, B. Perception in the absence of a stimulus, C. Making stories to fill in the gaps caused by memory loss, D. Conversion with imaginary person', 'role': 'user'}, {'content': "Answer: C \nExplanation: Striking feature of Korsakoff's psychosis is tendency to confabulate, which has been defined as falsification of memory in clear consciousness. It probably results from an inability to distinguish the temporal sequence of past events. The choice A means illusion and B and D means hallucination. Confabulation: As recent memory is more severely disturbed, very remote events are better remembered, especially in the initial stages. Recent memory impairment also leads to disorientation in time and place. To fill in the memory gaps, patient uses imaginary events in the early phase of illness (confabulation). With the progression of the disease, confabulation disappears.", 'role': 'assistant'}]