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
A lesion of the optic radiation involving the Meyer's loop causes- 
Select and explain. 
A. homonymous hemianopia, B. Superior quadrantopia, C. Inferior quadrantopia, D. central scotoma
B: Superior quadrantopia
Answer: B: Superior quadrantopia 
Explanation: B i.e. Superior quadrantopia