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
Microorganism adhere to host cell by - 
Select and explain. 
A. Lipoic acid, B. Lectin, C. Fimbriae, D. Capsule
A: Lipoic acid
Answer: A: Lipoic acid 
Explanation: Ans. is 'a' i.e. Lipoic acid