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
Presence of diatoms in bone marrow are characteristic of which of the following? 
Select and explain. 
A. Putrefaction, B. Drowning, C. Strangulation, D. Throttling
B: Drowning
Answer: B: Drowning 
Explanation: Ans. (b) DrowningRef.: The Essentials ofFSM by K.S. Narayan Reddy 31st ed. / 346