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: Psychiatry
All of the following are true about Rett's disease, Except : 
Select and explain. 
A. Regression of milestones occur after 5 months, B. Microcephaly is seen, C. Mental retardation is present, D. More common in males
D: More common in males
Answer: D: More common in males 
Explanation: Rett's disease is more common in females.