This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Physiology
[{'content': "'Swinging flashlight' test can be helpful to elicit \nSelect and explain. \nA. Argyll Robeson pupil, B. Adie's tonic pupil, C. Marcus Gunn pupil, D. Subtle inequality in pupil size", 'role': 'user'}, {'content': 'Answer: C \nExplanation: The relative afferent pupillary defect(RAPD) - Marcus Gunn pupil- can be elicited with the swinging flashlight test.', 'role': 'assistant'}]