This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Facial Nerve And Its Disorders, Subject name: ENT
[{'content': 'A patient has carcinoma of right tongue on its lateral border of anterior two-third, with lymph node of size 4 cm in level 3 on left side of the neck, stage of disease is: \nSelect and explain. \nA. N0, B. N1, C. N2, D. N3', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Remember:(i) . Any node 3 cm or less is N1 (ii) . Any node(s) > 3 cm and < 6 cm is N2 whether it is ipsilateral, bilateral, contralateral, single or multiple.(iii). Any node > 6 cm is N3 .', 'role': 'assistant'}]