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: Pathology
Caissons disease is caused by 
Select and explain. 
A. Amniotic fluid embolism, B. Hyper coagulability, C. Air or gas embolism, D. Tumour embolism
C: Air or gas embolism
Answer: C: Air or gas embolism 
Explanation: None