Light with a wavelength of λ=610 nm is incident on a single slit of width w=3.25 micrometers. A screen is located L=0.85 m behind the slit, and an interference pattern has formed on it. What is the angular separation between the first-order and second-order minima in the interference pattern?

a) 0.010 radians
b) 0.015 radians
c) 0.020 radians
d) 0.025 radians