This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper Extremity, Subject name: Anatomy
Which nerve is involved in this presentation? 
Select and explain. 
A. Long thoracic Nerve, B. Musculocutaneous nerve, C. Lateral anterior thoracic nerve, D. Thoracodorsal nerve
A: Long thoracic Nerve
Answer: A: Long thoracic Nerve 
Explanation: Ans. A long thoracic nerveNerve involvedMuscleLong thoracic NerveSerratus anteriorMusculocutaneous NerveCoracobrachialis muscleLateral anterior thoracic NervePectoralis major muscleThoracodorsal NerveLatissimus Dorsi