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: Medicine
[{'content': 'A 5-year-old woman presents with dry cough and progressive breathlessness of two years duration. Examination reveals clubbing, cyanosis and bibasilar crepts. What is the probable diagnosis - \nSelect and explain. \nA. Bronchiectasis, B. Lung abscess, C. Interstitial lung disease, D. Pulmonary tuberculosis', 'role': 'user'}, {'content': "Answer: C \nExplanation: Interstitial lung diseases like pulmonary fibrosis are characterised by the the presence of exeional dyspnea,a nonproductive cough,and bi-basilar inspiratory crackles with or without digital clubbing.Cyanosis can be present due to respiratory compromise. Ref:Harrison's med:18th edition,page no:2165.", 'role': 'assistant'}]