Three observers A, B and C measure the s...

Three observers A, B and C measure the speed of light coming from a source to be `v_A,v_B` and `v_C`. The observer A moves towards the source and C moves away from the soure at the same speed. The observer B stays stationary. The surrounding space is vacuum everywhere.

`v_(A) gt v_(B) gt v_(C)`

`v_(A) lt v_(B) lt v_(C)`

`v_(A) = v_(B) = v_(C)`

`v_(A) = v_(B) gt v_(C)`

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