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: Radiology
[{'content': 'Opacity with nodular & Irregular calcification is seen in: \nSelect and explain. \nA. Pulmonary Histiocytosis, B. Sarcoidosis, C. Scleroderma, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D. All of the aboveAll these conditions are associated with eggshell calcificationHoney combing is seen in:a. Histiocytosis Xb. Tuberous sclerosisc. Sarcoidosisd. Pneumoconiosise. Cryptogenic Fibrosing alveolitisf. Sclerodermag. Rheumatoid arthritish. Lipoid pneumoniai. Lymph angiomatosisj. AmyloidosisCrazy pavement appearance is seen in alveolar proteinosis', 'role': 'assistant'}]