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
Universal antidote contains the following, except: COMEDK 13 
Select and explain. 
A. Powdered charcoal, B. Tannic acid, C. Ground mustard, D. Magnesium oxide
C: Ground mustard
Answer: C: Ground mustard 
Explanation: Ans. Ground mustard