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': 'Which of the following is the least likely physiological change in pregnancy: \nSelect and explain. \nA. Increase in intravascular volume, B. Increase in cardiac output, C. Increase in stroke volume, D. Increase in peripheral vascular resistance', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]