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: Biochemistry
Glutathione is maintained in reduced state by the help of ? 
Select and explain. 
A. HMP shunt, B. Glycogenesis, C. Uronic acid pathway, D. Transamination
A: HMP shunt
Answer: A: HMP shunt 
Explanation: Ans. is 'a' i.e., HMP shunt Oxidized glutathione is reduced by the help of NADPH, which is generated by NADPH.