This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood, Subject name: Pediatrics
[{'content': 'Golden har svndrome- \nSelect and explain. \nA. 1st branchial arch, B. 1st & 2nd branchial arch, C. 2nd & 3rd branchial arch, D. 3rd & 4th branchial arch', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Ist & 2nd branchial arch Goldenhar syndrome (oculoauriculovertebral dysplasia with hemifacial microsomia) is a rare congenital de\\>elopmental anomaly involving the first and second branchial arches.The classic features of this syndrome include ocular changes such as microphthalmia, epibulbar dermoids, lipodennoids and coloboma; aural features such as preauricular tragi, hearing loss and microtia; and vertebral anomalies such as scoliosis, hemivertebrae and cenncal fusion.In addition to facial, vertebral, ophthalmic malformations cardiovascular, CNS, genitourinary: malformations have been associated with goldenhar syndrome.", 'role': 'assistant'}]