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: ENT
[{'content': 'Chondritis of aural cartilage is most commonly due to - \nSelect and explain. \nA. Staphylococcus, B. Pseudomonas, C. Candida, D. Both staph & Pseudomonas', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]