This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
[{'content': 'What is true about chorda tympani? \nSelect and explain. \nA. Postganglionic sympathetic, B. Postganglionic parasympathetic, C. Preganglionic parasympathetic, D. Postganglionic parasympathetic', 'role': 'user'}, {'content': "Answer: C \nExplanation: Chorda tympani from facial nerve provides preganglionic secretomotor fibres ( parasympathetic fibres ) to the glands. Ref : B D Chaurasia's Human Anatomy, seventh edition , volume 3 , pg. no., 136.", 'role': 'assistant'}]