This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mechanical injuries, Subject name: Forensic Medicine
[{'content': 'Commonest organ to be injured in primary blast injuries is - \nSelect and explain. \nA. Lung, B. Liver, C. Spleen, D. Skin', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The synopsis of forensic medicine & toxicology ; Dr k.s narayan reddy ;28th edition ;pg.no. 138 . Lungs show sub pleural patchy hemorrhage in the ear ,often in the line of ribs ,rupture of alveolar septa & bullae at the margins .Desquamated alveolar & bronchial epithelium is seen lying free. This causes reactive pulmonary edema & blood stained froth is found in air passages & later bronchopneumonia .this is called blast lung .', 'role': 'assistant'}]