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
Which of the following statements in not true regarding Lac Operon concept 
Select and explain. 
A. 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.
B: It is regulation method in eukaryotes and prokaryotes
Answer: B: It is regulation method in eukaryotes and prokaryotes 
Explanation: Lac operon is regulatory method seen only in prokaryotes.