This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Brainstem lesions and blood supply of CNS, Subject name: Anatomy
Primary motor area (Area no. 4) of brain is supplied by: 
Select and explain. 
A. Anterior cerebral aery, B. Middle cerebral aery, C. Anterior and middle cerebral aery, D. Anterior and posterior cerebral aery
C: Anterior and middle cerebral aery
Answer: C: Anterior and middle cerebral aery 
Explanation: - lateral surface of cerebrum receives supply from middle cerebral aery. -medial surface of cerebrum is majorly supplied by anterior cerebral aery. - The upper limb and head are represented on the lateral surface of the coex in homunculus, whereas pelvis and lower limb are on the medial surface of the hemispheres.