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': 'If a patient comes with complaints of post dated pregnancy what is the first thing that you will do: \nSelect and explain. \nA. USG, B. NST, C. Review the menstrual history once more, D. X-ray abdomen', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Review the menstrual history once more', 'role': 'assistant'}]