In a Single Slit Diffraction Experiment, the Width of the Slit

Multiple Choice

In a single slit diffraction experiment, the width of the slit is 3.1 × 10^-5 m and the distance from the slit to the screen is 2.2 m. If the beam of light of wavelength 600 nm passes through the slit and forms a diffraction pattern on the screen, what is the linear distance on the screen from the center of the diffraction pattern to the first dark fringe?

A) 2.1 cm
B) 4.3 cm
C) 6.3 cm
D) 7.4 cm
E) 8.5 cm