This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fetal Skull and Maternal Pelvis, Subject name: Gynaecology & Obstetrics
Biggest fetal skull diameter is 
Select and explain. 
A. Biparietal, B. Bitemporal, C. Mento vertical, D. Submentobregmatic
C: Mento vertical
Answer: C: Mento vertical 
Explanation: Ans. (c) Mento vertical