This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ocular Embryology& Anatomy, Subject name: Ophthalmology
Not true regarding M cells 
Select and explain. 
A. Larger cells, B. Color contrast, C. High Luminous contrast, D. Low Spatial frequency
B: Color contrast
Answer: B: Color contrast 
Explanation: Color contrast is seen by P cells and not M Cells PARALLEL PROCESSING M CELL P CELL COLOR CONTRAST NO YES LUMINANCE CONTRAST HIGHER LOWER SIZE LARGER CELLS SMALLER CELLS SPATIAL FREQUENCY LOWER HIGHER TEMPORAL FREQUENCY HIGHER LOWER