This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology and breast, Subject name: Anatomy
[{'content': 'Green discharge is most commonly seen with \nSelect and explain. \nA. Duct papilloma, B. Duct ectasia, C. Retention cyst, D. Fibro adenosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: A black or green discharge is usually the result of duct ectasia and its complications. Ref: Bailey and love 27th edition Pg no : 864', 'role': 'assistant'}]