This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brain , Subject name: Anatomy
All are true about blood supply of cerebral hemispheres except 
Select and explain. 
A. MCA is main supply of superolateral surface, B. ACA is main supply of inferior surface, C. PCA is main supply of inferior surface, D. All three aeries supply each surface
B: ACA is main supply of inferior surface
Answer: B: ACA is main supply of inferior surface 
Explanation: Most of the Inferior surface is supplied by the posterior cerebral aery.anterior cerebral aery supplies most of the medial surface of brain, medial pa of orbital surface of frontal lobe and a narrow strip of cerebral coex adjoining superomedial border.(Ref: Vishram Singh textbook of clinical neuroanatomy second edition pg 178)