As shown in the diagram, a diffraction grating is employed to determine the wavelength of monochromatic light. The spacing of the slits in the grating is $1.00 \times 10^{-6}\,\text{m}$. The angle between the first order diffraction maxima is $70.0^\circ$. What is the wavelength of the light?
- A$287\,\text{nm}$
- B$470\,\text{nm}$
- C$574\,\text{nm}$
- D$940\,\text{nm}$