The Headlights of a Car Are 1

Multiple Choice

The headlights of a car are 1.6 m apart and produce light of wavelength 575 nm in vacuum. The pupil of the eye of the observer has a diameter of 4.0 mm and a refractive index of 1.4. What is the maximum distance from the observer that the two headlights can be distinguished?

A) 8.0 km
B) 9.1 km
C) 11 km
D) 13 km
E) 16 km