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: Surgery
Dr. Christian Bernard preformed the Ist heart transplant in the year - 
Select and explain. 
A. 1962, B. 1965, C. 1969, D. 1967
D: 1967
Answer: D: 1967 
Explanation: None