This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Pediatrics
A children presents with running nose, breathlessness, family history positive, Most likely diagnosis is ? 
Select and explain. 
A. Bronchiolitis, B. Viral pneumonia, C. Bronchial asthma, D. None
C: Bronchial asthma
Answer: C: Bronchial asthma 
Explanation: The given features are suggestive of bronchial asthma. Clinical presentation Wheezing, dyspnea and cough. Variable -- both spontaneously and with therapy. Tenaceous mucus production. Symptoms worse at night. Nonproductive cough Limitation of activity Signs Inc. respiratory rate,with use of accessory muscles Hyper-resonant percussion note Expiratory rhonchi,expiration>inspiration. During very severe attacks,airflow may be insufficient to produce rhonchi - SILENT CHEST No findings when asthma is under control or blw attacks Ref : Essential pediatrics,O.P.Ghai , 7th edition,pg no:358