This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General obstetrics, Subject name: Gynaecology & Obstetrics
Longest diameter of fetal skull is 
Select and explain. 
A. Biparietal, B. Bitemporal, C. Occipito frontal, D. Mentoveical
D: Mentoveical
Answer: D: Mentoveical 
Explanation: Mentoveical is the longest anteroposterior diameter of the fetal head measuring approximately 13.5cms It is the diameter in brow presentation