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: Forensic Medicine
Incidence of Turner syndrome: MAHE 10 
Select and explain. 
A. 0.388888889, B. 0.736111111, C. 1.083333333, D. 1.777777778
D: 1.777777778
Answer: D: 1.777777778 
Explanation: Ans. 1: 2500