A Young's Double-Slit Apparatus Is Set Up

Multiple Choice

A Young's double-slit apparatus is set up.The source wavelength is 424 nm,and the double-slit spacing is 0.0560 mm.At what distance from the double slits should the screen be placed if the spacing between alternating bright fringes is to be 1.60 cm? (1 nm = 10−⁹ m)

A) 211 m
B) 2.11 m.
C) 0.825 m
D) 279 m
E) 2.11 m..