17.48: In the binary star system shown, the two stars fo
m p0gn2oir+8f vds4 j/llow circular orbits about the system’s center of
i j/dgnvop8r4m 20fs +mass. The stars are separated by a distance D that is large compared to their size and are subject only to their mutual gravitational attraction. The orbital period of the star of mass M is T. Which one of the following choices represents the total mass of the binary star system?