This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ballistics, Subject name: Forensic Medicine
[{'content': 'The purpose of choking of a firearm is to \nSelect and explain. \nA. Prevent the early dispersion of pellets, B. Minimize sound, C. Minimize smoke emission, D. Cause maximum destruction', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The primary purpose of choking of a shot gun is to reduce dispersion of the pellets . Other functions:- Increases the explosive forces of the pellets. Increases the velocity of the pellets.', 'role': 'assistant'}]