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: Ophthalmology
[{'content': 'A soft contact lens users has corneal keratitis cause is \nSelect and explain. \nA. Acanthamoeba-ulcer, B. Erosion of cornea, C. Pseudomonas infection, D. Herpes infection', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Pseudomonas infection', 'role': 'assistant'}]