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: Anatomy
[{'content': 'Posterior 1/3rd part of tongue develops from: \nSelect and explain. \nA. 1st  branchial arch., B. 2nd  branchial arch., C. 3rd  branchial arch., D. 4th  branchial arch.', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]