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
All of the following take pa in the pathogenesis of CME in diabetic retinopathy except: 
Select and explain. 
A. Retinal Pigment Epithelial (RPE) dysfunction, B. Oxidative stress, C. VEGF, D. Increased protein kinase c
A: Retinal Pigment Epithelial (RPE) dysfunction
Answer: A: Retinal Pigment Epithelial (RPE) dysfunction 
Explanation: A i.e., Retinal pigment epithelial (RPE) dysfunction