<prompt> A 9 month old infant presents with a 2- day history of fever, cough and breathlessness following an upper respiratory infection. She is febrile and has a respiratory rate of 80min. Intercostal and subcostal retractions and extensive rhonchi on auscultation. A chest X-ray reveals a hyperinflated chest -Bronchial asthmaForeign body aspirationBacterial pneumoniaBronchiolitis  <response>: Ans. is d i.e., Bronchiolitis 