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: Anatomy
Uro-rectal septum separates the cloaca into? 
Select and explain. 
A. Rectum and bladder, B. Anus and urethra, C. Allantois and blader, D. Rectum and urogenital sinus
D: Rectum and urogenital sinus
Answer: D: Rectum and urogenital sinus 
Explanation: D i.e. Rectum and urogenital sinus