This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Biochemistry
[{'content': 'Non competitive inhibition has \nSelect and explain. \nA. Decreased km and decreased Vmax, B. NORMAL km and decreased Vmax, C. Decreased km and increased Vmax, D. normal km and increased Vmax', 'role': 'user'}, {'content': 'Answer: B \nExplanation: ref : satyanaryana 7th ed', 'role': 'assistant'}]