Consider the five-dimensional Schwarzschild spacetime as in the previous question and timelike geodesics (i.e., trajectories of massive particles). Choose the correct statement. 2μ ☐ a.. There are only stable circular orbits for massive particles and these occur at r = L₁ L²- 2μ ☐ b. There are unstable stable circular orbits for massive particles; the only stable circular orbits occur at r = L C. There are no stable circular orbits for massive particles; only unstable circular orbits at r = L₁ 2μ L²-p 2μ ☐ d. There can be stable circular orbits for massive particles for some values of r; unstable circular orbits occur at r = L₁ L²-μ