This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Injuries, Subject name: Forensic Medicine
[{'content': 'Most common site of diatoms test done in drowning is? \nSelect and explain. \nA. Lungs, B. Bone marrow, C. Heart, D. Stomach', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Bone marrowRef. Forensic medicine and toxicology, JR. N. Karmakar 154, Review of forensic medicine, Toxicoloty by gautam biswas 2/e, p 160', 'role': 'assistant'}]