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: Dental
Codes of ethics was given by? 
Select and explain. 
A. Hammurabi, B. Hippocrates, C. Thylstrup, D. James childress
A: Hammurabi
Answer: A: Hammurabi 
Explanation: None