This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb, Subject name: Anatomy
[{'content': 'In spinal groove, radial nerve is accompanied by \nSelect and explain. \nA. Median nerve, B. Axillary aery, C. Profunda brachii aery, D. Musculocutaneous nerve', 'role': 'user'}, {'content': "Answer: C \nExplanation: radial nerve- At the beginning of the brachial aery, the radial nerve lies posterior to the aery. Soon the nerve leaves the aery, by entering the radial (spiral) groov on the back of the arm where it is accompanied by th profunda brachii aery. Ref : B D Chaurasia's Human Anatomy , seventh edition , volume 1 , pg. no. 96 fig. Ref : B D Chaurasia's Human Anatomy , seventh edition , volume 1 , pg. no.74 ( fig. no. 6.11 )", 'role': 'assistant'}]