This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
All of the following phrases concerning manic-depressive psychosis are true except 
Select and explain. 
A. Younger age of onset in women, B. Female: Male ratio of 2:1, C. Predisposition of aggressive women with masculin, D. Diagnosis reliable across geographic areas
B: Female: Male ratio of 2:1
Answer: B: Female: Male ratio of 2:1 
Explanation: M:F= 1:1