What Is the Slit Spacing of a Diffraction Grating Necessary $600 - \mathrm { nm }$

Multiple Choice

What is the slit spacing of a diffraction grating necessary so that $600 - \mathrm { nm }$ light will produce a first order principal maximum at $25.0 ^ { \circ }$ away from the centerline?

A) $2.01 \mu \mathrm { m }$
B) $1.42 \mu \mathrm { m }$
C) $4.12 \mu \mathrm { m }$
D) $5.44 \mu \mathrm { m }$
E) $3.12 \mu \mathrm { m }$