The Distinguishing Feature of a Starburst Galaxy Is _

The distinguishing feature of a starburst galaxy is _ .

A) a very large luminosity compared to the total luminosity of the Milky Way
B) a rate of star formation that may be 100 or more times greater than that in the Milky Way
C) strong radio emission from "lobes" of material well outside the visible boundaries of the galaxy
D) the presence of an unusually large number of binary star systems containing X- ray bursters