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
Most common cause of congenital sensineuronal hearing loss ? 
Select and explain. 
A. Parvovirus, B. CMV, C. Rubella, D. Toxoplasmosis
B: CMV
Answer: B: CMV 
Explanation: Ans. is'b'i.e., CMVCytomegalovirus -+ Most common viral cause of congenital viral deafnessMumps -+ Most common cause viral of acquired sensorineural hearing loss.