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: ENT
Kisselbach's plexus is formed by septal branches of all except - 
Select and explain. 
A. Posterior ethmoidal artery, B. Anterior ethamoidal artery, C. Sphenopalatine artery, D. Greater palatine artery
A: Posterior ethmoidal artery
Answer: A: Posterior ethmoidal artery 
Explanation: None