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': 'True about bacterial capsule is following except ? \nSelect and explain. \nA. Prevents phagocytosis, B. Stains by Gram stain, C. Protects bacteria from lytic enzymes, D. Lost by repeated subcultures', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Stains by Gram stain.", 'role': 'assistant'}]