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: Unknown
[{'content': 'Which of the following is the most common adverse effect of LSD and its related substances? \nSelect and explain. \nA. Bad trip, B. Flashbacks, C. Synaesthesia, D. Papillary dilatation', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Most common adverse effect of LSD is BAD TRIP (Panic like reaction).', 'role': 'assistant'}]