A Grating Is Made with 600 Slits Per Millimeter $916 \mathrm{~nm}$

Multiple Choice

A grating is made with 600 slits per millimeter. What is the slit separation?

A) $916 \mathrm{~nm}$
B) $160 \mathrm{pm}$
C) $600 \mathrm{~nm}$
D) $3.33 \times 10^{-6} \mathrm{~m}$
E) $1.67 \times 10^{-6} \mathrm{~m}$