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
[{'content': 'Which of the following statements in not true regarding Lac Operon concept \nSelect and explain. \nA. CAP is a positive regulator of LAC operon, B. It is regulation method in eukaryotes and prokaryotes, C. It is inducible operon, D. Lac Z gene codes for β galactosidase.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Lac operon is regulatory method seen only in prokaryotes.', 'role': 'assistant'}]