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': 'Virulence factor helpful for entamoeba histolytica to adhere to intestinal mucosa is \nSelect and explain. \nA. Lectin, B. Cystein protease, C. Amoebopore, D. Neuraminidase', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Amoebic Lectin antigen helps in adhesion.', 'role': 'assistant'}]