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': 'The Non-REM (NREM) sleep is commonly associated with: \nSelect and explain. \nA. Frequent dreaming, B. Frequent penile erections, C. Increased blood pressure, D. Night terrors', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Night terrorsNocturnal penile tumuescence occurs in REM SleepQ, it is a normal phenomenon, occurring 100 min / night Nocturnal penile tumescence & Early morning erection are used to distinguish between organic & psychogenic impotence as these are preserved in psychogenic impotenceQ.', 'role': 'assistant'}]