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: Gynaecology & Obstetrics
The highest incidence of Gestational Tropho-blastic Disease is in: 
Select and explain. 
A. Australia, B. Asia, C. North America, D. Western Europe
B: Asia
Answer: B: Asia 
Explanation: “Incidence of gestational trophoblastic disease varies widely with figures as high as 1 in 120 in some areas of Asia and South America, compared to 1 in 1200 in the united states.”
Devita 7/e, p 1360