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
[{'content': 'First sign of pubey in females is : \nSelect and explain. \nA. PubarcheMenarche, B. Menarche, C. Thelarche, D. All occur together', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Thelarche', 'role': 'assistant'}]