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
Sex can be determined by all except ? 
Select and explain. 
A. Preauricular sulcus, B. Innominate bone, C. Pelvic brim, D. Coccyx
B: Innominate bone
Answer: B: Innominate bone 
Explanation: Ans. is 'b' i.e., Innominate bone Male Female Preauricular sulcus Not Not frequent, narrow, shallow More frequent, broad & deep Pelvic brim Hea shaped Circular or elliptical; more spacious; longer diameters Coccyx Less movable More movable