This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sexuality and intersexuality, Subject name: Gynaecology & Obstetrics
[{'content': 'A 9 year girl presents with menarche. History reveals thelarche at the age of 8 years the most common cause of this condition in girls is \nSelect and explain. \nA. Idiopathic, B. Gonandal tumor, C. McCune albright syndrome, D. Hypothyroidism', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Precocious pubey:The term is reserved for girls who exhibit any secondary sexual charecters before the age of 8 or menstruate before the age of 10 Causes GnRH Dependent: 80% Constitutional : Activation of HPO axis Juvenile Primary Hypothyroidism Intracranial Lesions GnRH Independent Ovary Adrenal Liver Iatrogenic Granulosa cell tumour Theca cell tumor Leydig cell tumor Androblastoma McCune Albright syndrome Hyperplasia Tumor Hepatoblastoma Exogenous Estrogen or Androgen intake Ref: D.C.DUTTA&;S TEXTBOOK OF GYNAECOLOGY; 6th edition; Pg no:51', 'role': 'assistant'}]