This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of protein and amino acid, Subject name: Biochemistry
[{'content': 'Glutathione is composed of \nSelect and explain. \nA. Cysteine & Glycine, B. Glutamic acid, cysteine & glycine, C. Glutamic acid, glycine & cystine, D. Lysine & methionine', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Miester Cycle.Glutathione is composed of three aminoacids,which includes gamma-glutamate, cysteine and glycine.This is catalyzed by gamma glutamyl transferase.Ref: DM Vasudevan - Textbook of Biochemistry, 7th edition, page no: 198', 'role': 'assistant'}]