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': "Dimpling in carcinoma is due to: \nSelect and explain. \nA. Edema, B. Contraction of Cooper's ligaments, C. Subdermal lymphangitis, D. Scarring", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Dimpling: Small depression over skin of breast due to infiltration of ligament of Cooper by carcinoma Puckering: Small fold or wrinkle of skin over the breast due to infiltration of ligament of Cooper by carcinoma Cancer en-cuirasse: Infiltration of breast skin & chest wall with multiple nodules & ulceration by the carcinoma', 'role': 'assistant'}]