The spectra of five galaxies are observed as shown in the following figure. Match the velocity of each galaxy with the correct spectrum, assuming that only one of the galaxies is our Milky Way galaxy:
A
B
C
only
in M
D
E
400 nm
500 nm
600 nm
700 nm
0 km/s
1.
13000 km/s
68000 km/s
45000 km/s
27000 km/s