A Beam of Monochromatic Light Passes Through a Slit That $11.0 \mu \mathrm { m }$

A beam of monochromatic light passes through a slit that is $11.0 \mu \mathrm { m }$ wide. If the first order dark fringe of the resulting diffraction pattern is at an angle of $4.31 ^ { \circ }$ away from the centerline, what is the wavelength of light?

A) $201 \mathrm {~nm}$
B) $402 \mathrm {~nm}$
C) $301 \mathrm {~nm}$
D) $602 \mathrm {~nm}$
E) $827 \mathrm {~nm}$