<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 56-year-old man comes to the physician for a follow-up examination one week after a chest x-ray showed a solitary pulmonary nodule. He has no history of major medical illness. He has smoked 1 pack of cigarettes daily for the past 30 years. Physical examination shows no abnormalities. A tuberculin skin test is negative. A CT scan of the chest shows a 2.1-cm well-circumscribed, calcified nodule in the periphery of the right lower lung field. A CT-guided biopsy of the lesion is performed. Histological examination of the biopsy specimen shows regions of disorganized hyaline cartilage interspersed with myxoid regions and clefts of ciliated epithelium. Which of the following is the most likely diagnosis?? A: Pulmonary hamartoma, B: Eosinophilic granuloma, C: Mature teratoma, D: Small cell lung carcinoma, E: Bronchogenic cyst,  <response>: This is a clinical vignette describing a 56-year-old male smoker with a solitary pulmonary nodule found on chest x-ray and CT scan. Key findings include:- Solitary pulmonary nodule on imaging- Long smoking history - Nodule is calcified and well-circumscribed - Negative tuberculin skin test- Biopsy shows disorganized hyaline cartilage, myxoid regions, and ciliated epitheliumThe well-circumscribed and calcified nature of the nodule makes malignancy less likely. The biopsy results are most consistent with a pulmonary hamartoma, which is a benign tumor-like malformation that can contain cartilage, fat, and epithelial components. Eosinophilic granuloma, teratoma, and bronchogenic cyst are less likely based on imaging and histology. Small cell carcinoma would not show the benign histological features described.A: Pulmonary hamartoma 