Owls Are Nocturnal Animals and Have Exceptional Night Vision

Owls are nocturnal animals and have exceptional night vision. Because they are generally not active during the day, they have not developed an ability to see colours-they see only black and white. Given this information, we can conclude that owls have

A) more cones than rods.
B) more rods than cones.
C) cones but no rods.
D) rods but no cones.
E) more sensitive cones.