This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory, Subject name: Medicine
[{'content': 'Pink frothy expectoration is seen in \nSelect and explain. \nA. Pulmonary oedema, B. Pulmonary tuberculosis, C. Carcinoma lung, D. Hamartoma', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A. i.e. (Pulmonary oedema) (1466 - H17th) (26 - 27 - CMDT 09)Pink frothy expectoration is seen in - Pulm. Oedema, Mitral stenosisPULMONARY EDEMA - rapid onset of dyspnea at rest**, tachypnea, tachycardia and severe hypoxemia, Rales and wheezing, Hypertension* Hemoptysis results from rupture ofpulmonary bronchial venous connections secondary to pulmonary venous hypertensionAcute Pulmonary edema - presents with severe dyspnea, production of pink frothy sputum** and diaphoresis and cyanosis (357 - CMDT - 09)* Blood may arise from the airways in COPD, Bronchiectasis and bronchogenic carcinoma; from the pulmonary parenchyma in pneumonia, inhalation of crack cocaine or autoimmune diseases (Such as Good pasture disease or Wegner granulomatosis)', 'role': 'assistant'}]