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: ENT
[{'content': 'Wagner and Grossman theory is related to: \nSelect and explain. \nA. Palatal palsy, B. Vocal cord palsy, C. Facial palsy, D. Hypoglossal palsy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Semons law and wegner and Grossman hypothesis are both related to vocal cord palsy. Wagner grossman hypothesis states that in U/L recurrent laryngeal nerve palsy, cricothyroid muscle which receives innervation from superior laryngeal nerve keeps the cord in paramedian position due to its adduction action.', 'role': 'assistant'}]