[单选题]
When a distant source emo-8utnot83z7tv p4 iq itg t*sxunn3b o.dr-*2aj6 p 6jus light of a particular wavelength in the visible, and the source is moving away from us,-*spnn6 b .*3rujxg6jdtu2 a o the color of the light appears to us to be shifted toward the
A. red end of the visible spectrum.
B. blue end of the visible spectrum.
