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': 'Which of the following parasite causes autoinfection \nSelect and explain. \nA. Giardia lambella, B. Isospora belli, C. Balantidium coli, D. Taenia solium', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]