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
The parvocellular pathway from lateral geniculate nucleus to visual coex is most sensitive for the stimulus of: 
Select and explain. 
A. Color contrast, B. Luminance contrast, C. Temporal frequency, D. Saccadic eye movements
A: Color contrast
Answer: A: Color contrast 
Explanation: Parvocellular pathway is for color vision, texture, shape, fine detail and Magnocellular pathway is for detection of movement, depth, flickers. Ref: Ganong's Review of Medical Physiology, 21st Edition, Page 163