In coming to the conclusion that light beams are bent by gravity, Einstein reasoned that单项选择题

A

since all observers experience the same laws of physics, Newton's theory of gravity must apply to light beams.

B

since light speed is the same for all observers, moving observers would observe that light beams bend.

C

accelerated observers would find that light beams bend, so gravity must also bend light beams.

D

observers moving at uniform speed near the speed of light would find that light beams bend, so gravity must also bend light beams.

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