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 arteries supplying uterus is insensitive to hormonal changes \nSelect and explain. \nA. Radial arteries, B. Spiral arteries, C. Basal arteries, D. None of above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Basal arteries are relatively insensitive to hormonal changes.', 'role': 'assistant'}]