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 is the current Director General of WHO? 
Select and explain. 
A. Dr Margaret Chan, B. Dr B. Chisholm, C. Dr Anders Nordstrom, D. Dr LEE Jong-wook
A: Dr Margaret Chan
Answer: A: Dr Margaret Chan 
Explanation: Dr Margaret Chan is the Director-General of WHO, appointed by the World Health Assembly on 9 November 2006. The Assembly appointed Dr Chan for a second five-year term at its sixty-fifth session in May 2012. Dr Chan's new term will begin on 1 July 2012 and continue until 30 June 2017. In India's polio eradication programme, she took a leading role. Ref: