This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ear, Subject name: ENT
All of the following can cause hearing loss except 
Select and explain. 
A. Measles, B. Chickenpox, C. Mumps, D. Rubella
B: Chickenpox
Answer: B: Chickenpox 
Explanation: Hearing loss PRENATAL CAUSES Maternal factors : (a) Infections during pregnancy. (b) Drugs during pregnancy. (c) Radiation to mother in the first trimester. (a) Infections during pregnancy: Infections which affect the developing fetus are toxoplasmosis, rubella, cytomegaloviruses, herpes type 1 and 2 and syphilis. POSTNATAL CAUSES 1. Genetic: Though deafness is genetic, it manifests later in childhood or adult life. Deafness may occur alone as in familial progressive sensorineural deafness or in association with ceain syndromes, e.g. Alpo, Klippel-Feil, Hurler, etc. 2. Nongenetic: They are essentially same as in adults and include: (a) Viral infections (measles, mumps, varicella, influenza), meningitis and encephalitis. (b) Secretory otitis media. (c) Ototoxic drugs. (d) Trauma, e.g. fractures of temporal bone, middle ear surgery or perilymph leak. (e) Noise-induced deafness. Ref:- Dhingra; pg num:-115,117