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 statements about Botulism are true except - 
Select and explain. 
A. Botulism is caused by endotoxin, B. Honey ingestion causes infant botulism, C. Constipation is seen, D. Detection of antitoxin in the serum can aid in diagnosis
A: Botulism is caused by endotoxin
Answer: A: Botulism is caused by endotoxin 
Explanation: None