[单选题]
A diffraction grating has 50s wz)qs 874nhe)f*hohqi9 y(v,1gaop 00 lines per cm. The angle between the central maximum and the fourth order max(o9 yqa ,g1pivimum is $47.2^{\circ}$. What is the wavelength of the light?
A. $138 \; nm$
B. $183 \; nm$
C. $367 \; nm$
D. $637 \; nm$
