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': 'Pseudobulbar palsy is seen with \nSelect and explain. \nA. Unilateral goigandbar lesions, B. Bilateral coicobulbar lesions, C. Cranial nerve IX involvement, D. Cranial nerve N involvement', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer- B. Bilateral coicobulbar lesionsThis pattern of weakness results from disorders that affect the upper motor neurons or their axons in the cerebral coex, subcoical white matter, internal capsule, brainstem, or spinal cord.With coicobulbar involvement, weakness usually is observed only in the lower face and tongue; extraocular, upper facial, pharyngeal, and jaw muscles almost always are spared.With bilateral coicobulbar lesions, pseudobulbar palsy often develops: dysahria, dysphagia, dysphonia, andemotional lability accompany bilateral facial weakness and a brisk jaw jerk.', 'role': 'assistant'}]