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: Medicine
Secretory Diarrhea is caused by all of the following, Except: 
Select and explain. 
A. Cholera, B. Laxatives, C. Excess phenolphthalein intake, D. Clostridium difficle
D: Clostridium difficle
Answer: D: Clostridium difficle 
Explanation: Answer is D (Clostridium Difficle) Clostridium difficle is typically associated with Inflammatory' diarrhea and not 'secretory' diarrhea. Clostridium Difficle may rarely cause a secretory type of diarrhea, but it remains the single best answer of exclusion.