A Young's Double-Slit Apparatus Is Set Up So That a Screen

A Young's double-slit apparatus is set up so that a screen is positioned 1.6 m from the double slits, and the spacing between the two slits is 0.0315 mm. What is the distance between alternating bright fringes on the screen if the light source has a wavelength of 630 nm? (1 nm = 10 ^{- 9} m)

A) 0.016 m
B) 0.047 m
C) 0.025 m
D) 0.032 m