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
The following statements are true regarding Clostridium perfringens except - 
Select and explain. 
A. Infant botulism is caused by ingestion of preformed toxin, B. Clostridium botulinum A, B, C and F cause human disease, C. The gene for botulinum toxin is encoded by a bacteriophage, D. Clostridium baratii may cause botulism
A: Infant botulism is caused by ingestion of preformed toxin
Answer: A: Infant botulism is caused by ingestion of preformed toxin 
Explanation: None