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
Submental lymph node drainage by all except - 
Select and explain. 
A. Anterior palate, B. Tip of tongue, C. Floor of mouth, D. Lower lip
A: Anterior palate
Answer: A: Anterior palate 
Explanation: Submental lymph nodes drain superficial tissues below the chin, central part of lower lip, adjoining gums, anterior part of floor of mouth and tip of tongue.