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: Microbiology
All of the following occur in botulism except: 
Select and explain. 
A. Diplopia, B. Diarrhoea, C. Dysphagia, D. Dysarthria
B: Diarrhoea
Answer: B: Diarrhoea 
Explanation: Botulism toxin acts as parasympatholytic. So, it causes severe constipation, not diarrhoea.