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': 'Only intact eye movement in one and a half syndrome is \nSelect and explain. \nA. Adduction of Ipsilateral eye, B. Abduction of Ipsilateral eye, C. Adduction of contralateral eye, D. Abduction of contralateral eye', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Only abduction of contralateral eye is possible.', 'role': 'assistant'}]