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: Forensic Medicine
[{'content': 'Double-edged knife produces - \nSelect and explain. \nA. Elliptical wound, B. Linear wound, C. Circular wound, D. Curvilinear incision', 'role': 'user'}, {'content': 'Answer: A \nExplanation: With a double-edged weapon, the shape of the wound will be elliptical or slit-like and both angles will be sharp or pointed.\nWith a single-edged weapon, the shape will be triangular or wedge-shaped and one angle of the wound will be sharp, the other rounded, blunt, or squared-off. Blunt end on the skin may have small splits, so-called "fish-tailing" if the back edge of the blade is heavy.\nA spear or another round object causes a circular wound.', 'role': 'assistant'}]