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': 'A female presents with primary amenorrhea and absent vagina, the next investigation to be done is : \nSelect and explain. \nA. LH / FSH assay, B. Chromosomal analysis, C. Urianalysis, D. Laparoscopy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Laparoscopy', 'role': 'assistant'}]