This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Thorax, Subject name: Anatomy
[{'content': 'Which is the motor supply of diaphragm? \nSelect and explain. \nA. Phrenic nerve, B. Thoracodorsal nerve, C. Intercostals, D. Sympathetic nerves', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A Phrenic nerveRef: BDQ 6th ed. Vol 1 pg. 192NERVE SUPPLY OF DIAPHRAGM* Motor supply: Phrenic nerve* Sensory supply:# Peripheral part: Lower 6 intercostal nerves# Central part: Phrenic nerve', 'role': 'assistant'}]