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
Largest diameter of pelvis: 
Select and explain. 
A. Transverse, B. True conjugate, C. Oblique, D. Bituberous
A: Transverse
Answer: A: Transverse 
Explanation: Ans. (a) TransverseRef.: D.C. Dutta 8th ed. / 99-104* If such questions are asked regardless of pelvic plain, then transverse diameter of pelvic inlet has largest diameter (13cm).If it is not in option, next best option is oblique diameter (12cm)* Smallest diameter regardless of pelvic plain- Bispinous (10cm)* For more details, please refer to above explanation.