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
WHO constitution was made in – 
Select and explain. 
A. 1947, B. 1950, C. 1952, D. 1956
A: 1947
Answer: A: 1947 
Explanation: Constitution was drafted → 1946
Constitution come into force → 1948