A diffraction grating has $3400$ lines per cm$.$ What is

the angle of the order m $=1$ diffraction maximum for light

with wavelength $=580$ nm$?($in deg$)$

$30.$ A$3\mathrm{.}63$ B$4\mathrm{.}83$ C$6\mathrm{.}43$ D$8\mathrm{.}55$

E$11\mathrm{.}37$ F$15\mathrm{.}13$ G$20\mathrm{.}12$ H$26\mathrm{.}76$