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': 'Winging of scapula is due to injury to \nSelect and explain. \nA. Long thoracic nerve, B. Sho thoracic nerve, C. Axillary nerve, D. Suprascapular nerve', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Winging of scapula is due to the injury to long thoracic nerve(C5, C6, and C7). Long thoracic nerve supplies the serratus anterior muscle and injury to this nerve causes the prominence of interior angle and medial border of scapula. The patient is unable to perform pushing action. B D Chaurasia 7th edition Page no: 12', 'role': 'assistant'}]