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
What is the characteristic of a lacerated wound over bony surface due to blunt trauma without excessive skin crushing? 
Select and explain. 
A. Irregular margins, B. Regular sharp margins, C. Tearing, D. Flaying
B: Regular sharp margins
Answer: B: Regular sharp margins 
Explanation: Blunt force on areas where the skin is close to bone, and the subcutaneous tissues are scanty, may produce a wound which by linear splitting of the tissues, may look like incised wound. Lacerations produced without excessive skin crushing may have relatively regular sharp margins. Ref: The Essentials of Forensic Medicine and Toxicology by Dr. K. S. Narayan Reddy, 27th edition, Page 166.