This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Labour - II, Subject name: Gynaecology & Obstetrics
In a sagittal cross section of the pelvis 
Select and explain. 
A. The urethra lies anterior to the upper third of the vagina, B. The urethra lies posterior to the lower third of the vagina, C. The bladder when empty lies above and anterior to the uterine body, D. The bladder when empty lies parallel and anterior to the uterine body
D: The bladder when empty lies parallel and anterior to the uterine body
Answer: D: The bladder when empty lies parallel and anterior to the uterine body 
Explanation: - The urethra is only 3.5 cm long and is anterior to the lower third of the vagina. - The bladder when empty lies parallel and anterior to the uterine body