[单选题]
White light is spready acqjk*2jh-nk 7f8e + out i;52 i/qa0 h yvy1az x-eqodxf/nto spectral hues by a grating. If the grating has 2000 lines per centimeteda 2h51xify qqe/ a0 z-oy/;xvr, at what angle will red light (640 nm) appear in the first order?
A. $3.57^{\circ}$
B. $7.35^{\circ}$
C. $11.2^{\circ}$
D. $13.4^{\circ}$
