This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharynx, Subject name: ENT
[{'content': 'Lymphatic drainage of oropharynx is mainly through \nSelect and explain. \nA. Superficial cervical lymph nodes, B. Submandibular nodes, C. Jugulodigastric nodes, D. Jugulo-omohyoid nodes', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Lymphatics from oropharynx drain into the upper jugular chain, paicularly the jugulodigastric ( tonsilar) node. Some pas drain to the posterior cervical group also. The base of the tongue may drain bilaterally. Lymphatic drainage of the nasopharynx - upper deep cervical nodes. (Ref: Diseases of Ear, Nose and Throat, PL Dhingra; 7th edition, pg no. 271)', 'role': 'assistant'}]