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': 'Organism showing marked resistance to multidrug therapy - \nSelect and explain. \nA. Haemophilus ducreyi, B. Calymmatobacterium granulomatosis, C. Gonococci, D. Treponema pallidum', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]