This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mood Disorders, Subject name: Psychiatry
[{'content': 'All of the following are true about bipolar disorder except: \nSelect and explain. \nA. Prevalence is more amongst females than males, B. Lifetime Prevalance is around 1%, C. Mean age of onset is 21 years, D. Prevalence varies according to socioeconomic status', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The prevalence if bipolar is almost equal in men and women with male to female ratio being 1.1:1 Impoant points about Bipolar Disorder: Life time prevalence = 1% Males: Female = 1.1 : 1 ICD - 11 classifies bipolar disorder in two types- Bipolar I - mania + depression Bipolar II - Hypomania + depression Mean age of onset Bipolar I - 18 yrs Bipolar II - mid 20s', 'role': 'assistant'}]