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: Anaesthesia
[{'content': "Modified Allen's test is for checking the proper aerial supply at the \nSelect and explain. \nA. Wrist, B. Arm, C. Elbow, D. Forearm", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. Wrist', 'role': 'assistant'}]