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 cord of brachial plexus is formed by? \nSelect and explain. \nA. Ventral division of upper trunk, B. Dorsal division of upper trunk, C. Ventral divisions of upper, middle & lower trunks, D. Dorsal divisions of upper, middle & lower trunks', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd'i.e., Dorsal divisions of upper, middle & lower trunks", 'role': 'assistant'}]