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: Medicine
[{'content': "All are features of Wallenberg's syndrome,except - \nSelect and explain. \nA. Ipsilateral loss of pain and temperature, B. Ipsilateral loss of taste sensation, C. Ipsilateral loss of posterior column sensations, D. Ipsilateral involvement of lower cranial nerves.", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]