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There are some passengers inside a stati...

There are some passengers inside a stationary railway compartment. The track is frictionless. The centre of mass of the compartment itself (without the passengers) is `C_(1)`, while the centre of mass of the 'compartment plus passengers' system is `C_(2)`. If the passengers move about inside the compartment along the track.

A

both `C_(1)` and `C_(2)` will move with respect to the ground

B

neither `C_(1)` and `C_(2)` will move with respect to the ground

C

`C_(1)` will move but `C_(2)` will be stationary with respect to the ground

D

`C_(2)` will move but `C_(1)` will be stationary with respect to the ground

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The correct Answer is:
C
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