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: Surgery
[{'content': "Goldenhar's complex includes: \nSelect and explain. \nA. Cystic hygroma, B. Esophageal atresia, C. Branchial cleft anomaly, D. None of the above", 'role': 'user'}, {'content': "Answer: C \nExplanation: Rarely, branchial cleft anomalies occur in association with biliary atresia and congenital cardiac anomalies, an association that is referred to as Goldenhar's complex. Ref: Schwaz's principle of surgery 9th edition, chapter 39.", 'role': 'assistant'}]