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': 'Which of the following aeries supply pectoralis major muscle?1. Pectoral branches of thoracoacromial aery2. Intercostal aery3. Lateral thoracic aery4. Subclan aery5. Internal mammary aery \nSelect and explain. \nA. 1, 2 & 3, B. 2, 3 & 4, C. 1, 2 & 5, D. 1, 2, 4 & 5', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Blood supply of pectoralis major: Pectoralis major derives it blood supply mainly from pectoral branch of the thoracoacromial aery.Other aeries supplying the muscle are: First perforating branch of the internal thoracic aery (Internal mammary aery) and intercostal aery.', 'role': 'assistant'}]