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: Pharmacology
[{'content': 'which of the following can also be utilized to know whether a drug is a competitive or non-competitive inhibitor : \nSelect and explain. \nA. Potency., B. DRC., C. Efficacy., D. All of the above.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In a competitive inhibitor, the curve will shift to right while in non-competitive inhibitor there will be flattening of DRC.', 'role': 'assistant'}]