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: Physiology
Caisson’s disease 
Select and explain. 
A. Gas Embolism, B. Fat embolism, C. Amniotic fluid embolism, D. Tumor embolism
A: Gas Embolism
Answer: A: Gas Embolism 
Explanation: None