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': 'All of the following take pa in the pathogenesis of CME in diabetic retinopathy except: \nSelect and explain. \nA. Retinal Pigment Epithelial (RPE) dysfunction, B. Oxidative stress, C. VEGF, D. Increased protein kinase c', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e., Retinal pigment epithelial (RPE) dysfunction', 'role': 'assistant'}]