The Pupil of a Cat's Eye Narrows to a Slit

Multiple Choice

The pupil of a cat's eye narrows to a slit width of 0.5 mm in daylight. What is the angular resolution of the cat's eye in daylight (λ = 500 nm) ?

A) 0.01 rads
B) 10−⁵ rads
C) 10−³ rads
D) 10−⁴ rads
E) 0.1 rads