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
[{'content': 'Labile toxin of E.coli can be detected by the following methods of incubation except - \nSelect and explain. \nA. Into infant rabbit bowel, B. Into adult rabbit skin, C. Intra gastrically into infant Mouse, D. Into Tissue Culture of Chinese Hamster ovary cells', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]