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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 .

A

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

B

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

C

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

D

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

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