need answers fast

In the old west, a cowboy would put their ear on the railroad track to determine if a train was coming. Using this method, they could tell if the train was coming sooner than just listening for the train.


A good explanation for this would be that

A

sound and vibrations travel faster through gases than solids.

B

sound and vibrations travel faster through solids than gases.

C

sound and vibrations dissipate faster in solids than in liquids or gases.

D

sound and vibrations are more concentrated in solids than in liquids or gases.