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: Ophthalmology
Optic foramen is located between 
Select and explain. 
A. Between greater & lesser wing of sphenoid, B. Between two roots of lesser wing of sphenoid, C. Between two roots of greater wing of sphenoid, D. Between ethmoidal and frontal bones
B: Between two roots of lesser wing of sphenoid
Answer: B: Between two roots of lesser wing of sphenoid 
Explanation: Optic foramen is the opening to the optic canal present between two roots of lesser wing of sphenoid.