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': "Henle's layer refers to the thickened outer plexiform layer in the region of: \nSelect and explain. \nA. Foveola, B. Foveal region, C. Parafoveal region, D. Paramacular region", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Foveal region', 'role': 'assistant'}]