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': 'Winging of scapula is due to paralysis of nerve - \nSelect and explain. \nA. Long thoracic, B. Axillary, C. Radial, D. Median', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Paralysis of serratus anterior presents with winging of scapula. Nerve to serratus anterior is also known as Long thoracic nerve.', 'role': 'assistant'}]