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: Social & Preventive Medicine
Which of the following countries was the first to institute compulsory sickness insurance? 
Select and explain. 
A. USA, B. England, C. France, D. Germany
D: Germany
Answer: D: Germany 
Explanation: Ans. is 'd' i.e., Germany