This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuroanatomy, Subject name: Anatomy
The blockage of which of the following blood vessel will lead to medial medullary syndrome? 
Select and explain. 
A. A, B. B, C. C, D. D
B: B
Answer: B: B 
Explanation: Ans. B BThe following diagram and its branches should be remembered.