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': 'Features of fungal ulcer –a) Symptoms more than signsb) Dry ulcerc) Diffuse corneal edemad) Hyphenated margins \nSelect and explain. \nA. c, B. d, C. ab, D. bd', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Signs are more prominent than symptoms in a fungal corneal ulcer.\nA fungal corneal ulcer is dry looking, greyish white with elevated rolled out margins.\nThere is no diffuse corneal edema.\nUlcer margin is feathery and hyphate.', 'role': 'assistant'}]