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: Anatomy
[{'content': 'Root value of long thoracic nerve \nSelect and explain. \nA. C-3, 4, 5, B. C-5, 6, 7, C. C-7, 8 T-1, D. C-2, 3, 4', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. b. C-5, 6, 7Long thoracic nerve is branch of trunk forming brachial plexus with root value of C-5, 6, 7.Dorsal scapular nerveSuprascapular nerveNerve to subclaviusLateral pectoral nerveMusculocutaneous nerveAxillary nerveMeduan nerveUlnar nerveMedial cutaneous nerve of the forearmMedial cutaneous nerve of the armRadial nerveLower subscapular nerveThoraco dorsal nerveMedial pectoral nerveUpper subscapular nerveLong thoracic nerveBranches of the plexus for the upper limbBranches of the RootsNerve to serratus anterior (Long thoracic nerve C5.6,7)Q Nerve to rhomboideus (Dorsal Scapular nerve COdeg', 'role': 'assistant'}]