This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Physiology
Nitrogen narcosis is caused due to: 
Select and explain. 
A. Nitrogen inhibits dismutase enzyme, B. Increase production of nitrous oxide, C. Increased solubility of nitrogen in nerve cell membrane, D. Decrease in oxygen free radicals
C: Increased solubility of nitrogen in nerve cell membrane
Answer: C: Increased solubility of nitrogen in nerve cell membrane 
Explanation: Ans. (c) Increased solubility of nitrogen in nerve cell membrane(Ref: Indu Khurana, p.361)Nitrogen narcosis occurs due to increased solubility of nitrogen in nerve cell membrane