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: Surgery
The patent vitello-intestinal duct most often discharges - 
Select and explain. 
A. Mucus, B. Pus, C. Urine, D. Faeces
A: Mucus
Answer: A: Mucus 
Explanation: None