This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast, Subject name: Surgery
[{'content': "Nipple inversion occurs due to involvement of: \nSelect and explain. \nA. Cooper's ligament, B. Subareolarm duct, C. Parenchyma of breast, D. Subdermal lymphatics", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Subareolar duct(Ref: Bailey 25/e p834)* Peau- de orange - Subdermal Lymphatic infiltration (T4b)* Dimpling/Puckering/tethering of skin - Due to Coopers ligament of breast involvement (It is not skin involvement is T staging)* Nipple retraction - Fibrosis in and around the Subareolar duct', 'role': 'assistant'}]