This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Forensic Medicine
Crepitus over skin of the swollen limb should ale on possibility of: KCET 13 
Select and explain. 
A. Air embolism, B. Gas gangrene, C. Fat embolism, D. DIC
B: Gas gangrene
Answer: B: Gas gangrene 
Explanation: Ans. Gas gangrene