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
Lowest projection of ligamentum denticulatum lies at which level of spinal nerves 
Select and explain. 
A. T9,10, B. T12,L1, C. S2,3, D. S4,5
B: T12,L1
Answer: B: T12,L1 
Explanation: First tooth of ligamentum denticulatum is at the level of foramen magnum, last between T12-L1 Ref: Gray's39e/p227