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': 'Anterior axillary fold is due to which muscle ? \nSelect and explain. \nA. Pectoralis major, B. Pectoralis minor, C. Subscapularis, D. Teres major', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Anterior axillary fold is rounded in shaped and is formed by pectoralis major (lower border). Posterior axillary fold is formed by teres major and latisimus dorsi.', 'role': 'assistant'}]