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
Ashley's rule is used to : 
Select and explain. 
A. Determine age using sternum, B. Determine sex using sternum, C. Determine age using mandible, D. Determine sex using mandible
B: Determine sex using sternum
Answer: B: Determine sex using sternum 
Explanation: Ashley's rule States that male sternum lenth will be more than 149mm and female sternum lenth will be less than 149mm.