[单选题]
When light illuminates a grating with 7000 lines pervpqs+ drob ,4lkf-28y centimeter, its se+g l:p;0cy4 hszaod2lq-0pl qcond order maximum i0dpq2co yqs+lhz 0;4g:lapl-s at $62.4^{\circ}$. What is the wavelength of the light?
A. $336 \; nm$
B. $363 \; nm$
C. $633 \; nm$
D. $752 \; nm$
