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
Middle ethmoidal sinus is supplied by 
Select and explain. 
A. Anterior ethmoidal nerve and vessels, B. Middle ethmoidal nerve and vessels, C. Posterior ethmoidal nerve and vessels, D. All of the above
A: Anterior ethmoidal nerve and vessels
Answer: A: Anterior ethmoidal nerve and vessels 
Explanation: Middle ethmoidal sinus:
→ Made up of 1 to 7 air cells.
→ Opens into middle meatus of nose.
→ Supplied by -

Anterior ethmoidal nerve and vessels.
Orbital branches of pterygopalatine ganglion.

→ Lymphatic drainage - Submandibular nodes.