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: Unknown
[{'content': 'All are true about mammary gland, except - \nSelect and explain. \nA. Is a modified sweat gland, B. Extends from 2nd to 6th rib vertically, C. Supplied by internal mammary artery, D. Nipple is supplied by 6th intercostal nerve', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans- D Nipple is supplied by 6th intercostal nerve o The nipple is supplied by 4 th intercostal nerve, not 6 th intercostal nerve', 'role': 'assistant'}]