This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: parasitology, Subject name: Microbiology
[{'content': 'Simple life cycle is seen in - \nSelect and explain. \nA. Ascaris, B. T. solium, C. Toxoplasma, D. Giardia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Human parasite may complete their life cycle in a single host or more than one host.Some parasites require two or three host to complete their life cycle Ascaris lumbricoides- single host- human being (refer pgno:6 baveja 3 rd edition)', 'role': 'assistant'}]