[单选题]
One of Einstein's po9 wme;n8+gu6an(j dsvos).fjstulates in formulating the special t4t:jpgvm3z.l heory of relativity was that the laws of physics are the same in reference fram4 gm3vj.pltz :es that
A. accelerate.
B. move at constant velocity with respect to an inertial frame.
C. oscillate.
D. are stationary, but not in moving frames.
