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': 'Pleomorphic organisms are : \nSelect and explain. \nA. Corynebacterium, B. Pseudomonas, C. Mycoplasma, D. Gonococcus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Mycoplasma', 'role': 'assistant'}]