<prompt> A patient on ATT develops tinnitus and hearing loss due to:IsoniazidPyrazinamideStreptomycinRifampicin  <response>: c StreptomycinRef. Cummings, 6th ed., 2371Streptomycin is predominantly vestibulotoxic. In very high doses they can affect the cochlear system also, leading to hearing loss and tinnitus. 