17.48: In the binary star system shown, the two stars follow
a*ryhkz -7ky9 6y -a (l5pbgblqu-jp4circular orbits about the system’s center of mass. The stars are separated by a distance D that is large compared to their size and are subject only to their mutua
-p- lkh y( b7ar9jga6 yk*u4z q-pby5ll 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?