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
After mastectomy, patient is NOT able to extend, adduct and internally rotate the arm. Nerve supply to which of the following muscles is damaged:- 
Select and explain. 
A. Pectoralis major, B. Teres minor, C. Latissimus dorsi, D. Long head of Triceps
C: Latissimus dorsi
Answer: C: Latissimus dorsi 
Explanation: Mastectomy may damage thoracodorsal nerve leading to paralysis of latissimus dorsi. The patient finds difficulty in - shoulder extension medial rotation adduction.