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
Which of these muscles is not cut in postero lateral thoractomy : 
Select and explain. 
A. Serratus anterior, B. Pectoralis major, C. Latissimus dorsi, D. Intercostals
B: Pectoralis major
Answer: B: Pectoralis major 
Explanation: B. i.e. Pectoralis major