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: Pathology
[{'content': 'True about lung carcinoma is - \nSelect and explain. \nA. Squamous cell ca is most common carcinoma, B. Squamous cell ca cause myopathy, C. Small cell ca has best prognosis, D. None', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Repeated question Lung cancer, also known as lung carcinoma,is a malignant lung tumor characterized by uncontrolled cell growth in tissues of the lung. If left untreated, this growth can spread beyond the lung by the process of metastasis into nearby tissue or other pas of the body.Most cancers that sta in the lung, known as primary lung cancers, are carcinomas.The two main types are small-cell lung carcinoma (SCLC) and non-small-cell lung carcinoma (NSCLC).The most common symptoms are coughing (including coughing up blood), weight loss, shoness of breath, and chest pains.', 'role': 'assistant'}]