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': 'Blood supply of breast by all except : \nSelect and explain. \nA. Internal mammary artery, B. Intercostal vessels, C. Thoraco - dorsal branch of subscapular artery, D. Thoraco acromial artery', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Blood supply of breast :\n1.\xa0Subclavian artery:\n\n\xa0 \xa02nd, 3rd & 4th anterior intercostal arteries (branches of internal mammary).\n\n2.\xa0Axillary artery :\n\n\xa0 \xa0Superior thoracic artery.\n\xa0 \xa0Thoraco acromial artery.\n\xa0 \xa0Lateral thoracic artery.\n\xa0 \xa0Subscapular artery.\n\n3.\xa0\xa0Thoracic aorta :\n\n\xa0 \xa02nd, 3rd & 4th posterior intercostal arteries.', 'role': 'assistant'}]