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
In aluminium phosphide poisoning, not true is: 
Select and explain. 
A. Accumulation of acetylcholine at NM junction, B. Cytochrome oxidase, C. Phosphine formation, D. Metabolic acidosis
A: Accumulation of acetylcholine at NM junction
Answer: A: Accumulation of acetylcholine at NM junction 
Explanation: A i.e. Accumulation of acetyl choline at NM Junction - Celphos or Aluminium phosphide, on coming in contact with moisture liberates phosphineQ, which on reacting with silver nitrate (AgNO3) gives black colour' (Breath test). It acts by inhibiting ETS mainly cytochrome oxidaseQ. - In Celphos poisoning garlic like odour is present at mouth & nostrils; which is also seen in ZnP & As poisoning.