This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
A 3 Month old Child presents with Biphasic stridor and Barking cough. All are true eXcept 
Select and explain. 
A. Hypopharyngeal dila on and subglottic stenosis on X-Ray, B. Involve subglottis most commonly, C. Male are involved more commonly than female, D. Antibiotics are used as an initial treatment
D: Antibiotics are used as an initial treatment
Answer: D: Antibiotics are used as an initial treatment 
Explanation: Acute bronchioli s is predominantly a viral disease. Respiratory syncytial virus (RSV) is responsible for >50% of cases. Treatment For infants <3 yr of age, it is acceptable to continue to administer inhaled medications through an MDI with mask and spacer if a therapeutic benefit is demonstrated. ref: KD Tripathi 8th ed.