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': 'Most common cause of congenital sensineuronal hearing loss ? \nSelect and explain. \nA. Parvovirus, B. CMV, C. Rubella, D. Toxoplasmosis', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is'b'i.e., CMVCytomegalovirus -+ Most common viral cause of congenital viral deafnessMumps -+ Most common cause viral of acquired sensorineural hearing loss.", 'role': 'assistant'}]