This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb bones and muscles (proximal region) & Scapular movements, Subject name: Anatomy
[{'content': 'After mastectomy, patient is NOT able to extend, adduct and internally rotate the arm. Nerve supply to which of the following muscles is damaged:- \nSelect and explain. \nA. Pectoralis major, B. Teres minor, C. Latissimus dorsi, D. Long head of Triceps', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Mastectomy may damage thoracodorsal nerve leading to paralysis of latissimus dorsi. The patient finds difficulty in - shoulder extension medial rotation adduction.', 'role': 'assistant'}]