$($Interference$)$ Light passes through a diffraction grating with a slit spacing of $d=1\mathrm{.}0m.$ The first bright spot from the central bright spot is seen at an angle of $30\mathrm{.}0.$ What is the wavelength of this light?

a$)250$ nm

b$)500$ nm

c$)1000$ nm

d$)333$ nm

e$)$ None of the above.