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
An object located in the panum's area stimulates 
Select and explain. 
A. Fusion, B. Confusion, C. Diplopia, D. Stereopsis
D: Stereopsis
Answer: D: Stereopsis 
Explanation: Panum's area of fusion stimulates stereopsis.